Koga Akihisa 古賀昌久

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KOGA Akihisa 古賀昌久

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Researcher Number	90335373
Other IDs
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Affiliation (Current)	2025: 東京科学大学, 理学院, 准教授
Affiliation (based on the past Project Information) *help	2025: 東京科学大学, 理学院, 准教授 2016 – 2023: 東京工業大学, 理学院, 准教授 2013 – 2015: 東京工業大学, 理工学研究科, 准教授 2009 – 2011: Tokyo Institute of Technology, 大学院・理工学研究科, 准教授 2008: Kyoto University, 理学研究科, 助教 … More 2007: Kyoto University, 大学院・理学研究科, 助教 2006: 大阪大学, 大学院工学研究科, 助手 2003 – 2005: 大阪大学, 大学院・工学研究科, 助手 Less
Review Section/Research Field	Principal Investigator Condensed matter physics II / Transformative Research Areas, Section (II) / Basic Section 13030:Magnetism, superconductivity and strongly correlated systems-related / Science and Engineering Except Principal Investigator Basic Section 13030:Magnetism, superconductivity and strongly correlated systems-related / Science and Engineering / Basic Section 26010:Metallic material properties-related / Condensed matter physics II
Keywords	Principal Investigator 準結晶 / 計算物理 / 磁性 / ペンローズ格子 / 超流動 / 強相関系 / 低温物性 / スピン輸送 / 量子計算 / マヨラナ粒子 … More / キタエフ模型 / 超伝導 / 六回対称黄金比タイル / 価数転移 / 量子閉じ込め / 光格子 / 原子・分子物理 / 超流動状態 / 量子モンテカルロ法 / 平均場近似 / 冷却原子系 / 物性理論 / 強相関電子系 … More Except Principal Investigator トポロジカル論理ゲート / トポロジカル超伝導 / ジョセフソン効果 / 並進・回転対称性の破れたスピン3重項超伝導状態 / 並進・回転対称生の破れたスピン3重項超伝導状態 / 超伝導量子計算素子 / 超伝導ダイオード効果 / 並進・回転対称性の破れた超伝導状態 / 異常なジョセフソン効果 / マヨラナ準粒子 / キタエフ模型 / 物性 / フェイゾン / 超伝導 / 磁性 / 補空間 / 高次元 / 近似結晶 / 準結晶 / ハイパーマテリアル / 電子論 / 磁性理論 / 金属磁性 / 希土類永久磁石 / transition metal / quantum fluctuations / itinerant electrons / electron correlations / frustration / 遷移金属 / 量子揺らぎ / 遍歴電子 / 電子相関 / フラストレーション Less

不規則ハイパーユニフォーム構造の分類に向けた機械学習Principal Investigator
- Principal Investigator
  
  古賀昌久
- Project Period (FY)
  2025 – 2026
- Research Category
  
  Grant-in-Aid for Transformative Research Areas (A)
- Review Section
  
  Transformative Research Areas, Section (II)
- Research Institution
  Institute of Science Tokyo
マヨラナ粒子を活用したスピン流の制御機構の探求Principal Investigator
- Principal Investigator
  
  古賀昌久
- Project Period (FY)
  2022 – 2026
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 13030:Magnetism, superconductivity and strongly correlated systems-related
- Research Institution
  Tokyo Institute of Technology
Theoretical proposal for novel devices based on the Kitaev model
- Principal Investigator
  
  Tsuchiura Hiroki
- Project Period (FY)
  2021 – 2023
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Review Section
  
  Basic Section 13030:Magnetism, superconductivity and strongly correlated systems-related
- Research Institution
  Tohoku University
Physics of hypermaterials and the search for hidden orders
- Principal Investigator
  
  Deguchi Kazuhiko
- Project Period (FY)
  2019 – 2023
- Research Category
  
  Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
- Review Section
  
  Science and Engineering
- Research Institution
  Nagoya University
Electronic Theory for High-Performance Rare Earth Permanent Magnets
- Principal Investigator
  
  YOSHIOKA Takuya
- Project Period (FY)
  2018 – 2020
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 26010:Metallic material properties-related
- Research Institution
  Tohoku University
Unconventional strong coupling superconductivity in the quasiperiodic systems: nonperturbative approachPrincipal Investigator
- Principal Investigator
  
  Koga Akihisa
- Project Period (FY)
  2017 – 2022
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Condensed matter physics II
- Research Institution
  Tokyo Institute of Technology
準周期構造を持つ重い電子系における価数転移Principal Investigator
- Principal Investigator
  
  古賀昌久
- Project Period (FY)
  2016 – 2017
- Research Category
  
  Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
- Review Section
  
  Science and Engineering
- Research Institution
  Tokyo Institute of Technology
Unperturbed approach to strongly correlated superconductivity: inhomogenity and frequency dependencePrincipal Investigator
- Principal Investigator
  
  Koga Akihisa
- Project Period (FY)
  2013 – 2016
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Condensed matter physics II
- Research Institution
  Tokyo Institute of Technology
Strong correlations in the fermionic system with confining potentialPrincipal Investigator
- Principal Investigator
  
  KOGA Akihisa
- Project Period (FY)
  2008 – 2011
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Condensed matter physics II
- Research Institution
  Tokyo Institute of Technology
  Kyoto University
軌道依存型モット転移近傍における強相関効果Principal Investigator
- Principal Investigator
  
  古賀昌久
- Project Period (FY)
  2005 – 2007
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Condensed matter physics II
- Research Institution
  Kyoto University
  Osaka University
Electron Correlation Effects in Frustrated Itinerant Electron Systems
- Principal Investigator
  
  KAWAKAMI Norio
- Project Period (FY)
  2003 – 2005
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Condensed matter physics II
- Research Institution
  Osaka University

[Journal Article] Theory of non-Hermitian fermionic superfluidity on a honeycomb lattice: Interplay between exceptional manifolds and Van Hove singularity2024
- Author(s)
  Takemori Soma、Yamamoto Kazuki、Koga Akihisa
- Journal Title
  
  Physical Review B
  
  Volume: 109 Issue: 6
- DOI
  10.1103/physrevb.109.l060501
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-23K19031, KAKENHI-PROJECT-22K03525, KAKENHI-PLANNED-19H05821, KAKENHI-PROJECT-21H01025
[Journal Article] Ferromagnetically ordered states in the Hubbard model on the H00?hexagonal golden-mean tiling2024
- Author(s)
  T. Matsubara, A. Koga, and S. Coates
- Journal Title
  
  Phys. Rev. B
  
  Volume: 109 Issue: 1 Pages: 0144131-11
- DOI
  10.1103/physrevb.109.014413
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-22K03525, KAKENHI-PLANNED-19H05821
[Journal Article] Confined states in the tight-binding model on the hexagonal golden-mean tiling2023
- Author(s)
  Matsubara Toranosuke、Koga Akihisa、Coates Sam
- Journal Title
  
  Journal of Physics: Conference Series
  
  Volume: 2461 Issue: 1 Pages: 012003-012003
- DOI
  10.1088/1742-6596/2461/1/012003
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21H01025, KAKENHI-PLANNED-19H05821
[Journal Article] Quantum algorithm for the microcanonical Thermal Pure Quantum method2023
- Author(s)
  K. Mizukami and A. Koga
- Journal Title
  
  Phys. Rev. A
  
  Volume: 108 Issue: 1 Pages: 0124041-10
- DOI
  10.1103/physreva.108.012404
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22K03525, KAKENHI-PLANNED-19H05821
[Journal Article] Energy Flow during Relaxation in an Electron-Phonon System with Multiple Modes: A Nonequilibrium Green’s Function Study2023
- Author(s)
  Inayoshi Ken、Koga Akihisa、Murakami Yuta
- Journal Title
  
  Journal of the Physical Society of Japan
  
  Volume: 92 Issue: 12 Pages: 1-17
- DOI
  10.7566/jpsj.92.124001
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-23KJ0883, KAKENHI-PROJECT-22K03525, KAKENHI-PROJECT-20K14412, KAKENHI-PLANNED-19H05821
[Journal Article] Efficient Control of High Harmonic Generation in Carbon Nanotubes using the Aharonov-Bohm Effect2023
- Author(s)
  Y. Murakami, K. Nagai, and A. Koga
- Journal Title
  
  Phys. Rev. B
  
  Volume: 108 Issue: 24 Pages: 241202-241202
- DOI
  10.1103/physrevb.108.l241202
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22K03525, KAKENHI-PROJECT-20K14412, KAKENHI-PLANNED-19H05821
[Journal Article] Efficient scheme for time-dependent thermal pure quantum state: Application to the Kitaev model with armchair edges2023
- Author(s)
  Taguchi Hirokazu、Koga Akihisa、Murakami Yuta
- Journal Title
  
  SciPost Physics Proceedings
  
  Volume: 11 Issue: 11
- DOI
  10.21468/scipostphysproc.11.003
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PLANNED-19H05821, KAKENHI-PROJECT-21H01025
[Journal Article] Majorana Gap Formation in the Anisotropic Kitaev Model with Ordered Flux Configuration2023
- Author(s)
  A. Hashimoto, Y. Murakami, and A. Koga
- Journal Title
  
  Phys. Rev. B
  
  Volume: 107 Issue: 17 Pages: 1744281-8
- DOI
  10.1103/physrevb.107.174428
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22K03525, KAKENHI-PROJECT-20K14412, KAKENHI-PLANNED-19H05821, KAKENHI-PROJECT-21H01025
[Journal Article] Field-direction Dependence of Majorana-mediated Spin Transport2023
- Author(s)
  Taguchi Hirokazu、Koga Akihisa、Murakami Yuta、Nasu Joji、Tsuchiura Hiroki
- Journal Title
  
  JPS Conf. Proc.
  
  Volume: 38 Pages: 011152-011152
- DOI
  10.7566/jpscp.38.011152
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-19K03742, KAKENHI-PLANNED-19H05821, KAKENHI-PROJECT-21H01025
[Journal Article] High-harmonic Generation in the Rice-Mele Model: Role of Intraband Current Originating from Interband Transition2023
- Author(s)
  Nagai Kohei、Murakami Yuta、Koga Akihisa
- Journal Title
  
  JPS Conference Proceedings
  
  Volume: 38
- DOI
  10.7566/jpscp.38.011172
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PLANNED-19H05821
[Journal Article] Photoinduced Phase Transition in Two-Band model on Penrose Tiling2022
- Author(s)
  Inayoshi Ken、Murakami Yuta、Koga Akihisa
- Journal Title
  
  Journal of Physics: Conference Series
  
  Volume: 2164 Issue: 1 Pages: 012050-012050
- DOI
  10.1088/1742-6596/2164/1/012050
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PLANNED-19H05821
[Journal Article] Thermally enhanced Majorana-mediated spin transport in the Kitaev model2022
- Author(s)
  Taguchi Hirokazu、Murakami Yuta、Koga Akihisa
- Journal Title
  
  Physical Review B
  
  Volume: 105 Issue: 12 Pages: 125137-125137
- DOI
  10.1103/physrevb.105.125137
- Peer Reviewed
- Data Source
  KAKENHI-PUBLICLY-20H05265, KAKENHI-PROJECT-21H01025, KAKENHI-PROJECT-17K05536, KAKENHI-PROJECT-20K14412, KAKENHI-PLANNED-19H05821
[Journal Article] Photoinduced dynamics of a quasicrystalline excitonic insulator2022
- Author(s)
  Inayoshi Ken、Murakami Yuta、Koga Akihisa
- Journal Title
  
  Physical Review B
  
  Volume: 105 Issue: 10 Pages: 104307-104307
- DOI
  10.1103/physrevb.105.104307
- Peer Reviewed
- Data Source
  KAKENHI-PUBLICLY-20H05265, KAKENHI-PROJECT-17K05536, KAKENHI-PROJECT-20K14412, KAKENHI-PLANNED-19H05821
[Journal Article] Ferrimagnetically ordered states in the Hubbard model on the hexagonal golden-mean tiling2022
- Author(s)
  A. Koga and S. Coates
- Journal Title
  
  Phys. Rev. B
  
  Volume: 105 Issue: 10 Pages: 1044101-9
- DOI
  10.1103/physrevb.105.104410
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K05536, KAKENHI-PLANNED-19H05818, KAKENHI-PLANNED-19H05821
[Journal Article] Scattering phenomena for spin transport in a Kitaev spin liquid2022
- Author(s)
  Nasu Joji、Murakami Yuta、Koga Akihisa
- Journal Title
  
  Physical Review B
  
  Volume: 106 Issue: 2 Pages: 024411-024411
- DOI
  10.1103/physrevb.106.024411
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19K03742, KAKENHI-PROJECT-22K03525, KAKENHI-PROJECT-20H00122, KAKENHI-PROJECT-17K05536, KAKENHI-PROJECT-23K22446, KAKENHI-PLANNED-19H05821, KAKENHI-PROJECT-21H05017
[Journal Article] Anomalous Temperature Dependence of High-Harmonic Generation in Mott Insulators2022
- Author(s)
  Murakami Yuta、Uchida Kento、Koga Akihisa、Tanaka Koichiro、Werner Philipp
- Journal Title
  
  Physical Review Letters
  
  Volume: 129 Issue: 15 Pages: 1574011-6
- DOI
  10.1103/physrevlett.129.157401
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-22K03484, KAKENHI-PROJECT-22K03525, KAKENHI-PROJECT-20K14412, KAKENHI-PROJECT-17K05536, KAKENHI-PLANNED-19H05821, KAKENHI-PROJECT-21H05017
[Journal Article] Optical response of the tightbinding model on the Fibonacci chain2022
- Author(s)
  H. Iijima, Y. Murakami, and A. Koga
- Journal Title
  
  J. Phys. Soc. Jpn.
  
  Volume: 91 Issue: 12 Pages: 1247021-5
- DOI
  10.7566/jpsj.91.124702
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22K03525, KAKENHI-PROJECT-20K14412, KAKENHI-PROJECT-17K05536, KAKENHI-PLANNED-19H05821, KAKENHI-PROJECT-21H05017
[Journal Article] ハイパーマテリアルの磁性と超伝導2021
- Author(s)
  竹森那由多、古賀昌久
- Journal Title
  
  固体物理
  
  Volume: 56 Pages: 79-88
- Peer Reviewed
- Data Source
  KAKENHI-PLANNED-19H05821
[Journal Article] Role of Majorana fermions in spin transport of anisotropic Kitaev model2021
- Author(s)
  Taguchi Hirokazu、Murakami Yuta、Koga Akihisa、Nasu Joji
- Journal Title
  
  Physical Review B
  
  Volume: 104 Issue: 12 Pages: 125139-125139
- DOI
  10.1103/physrevb.104.125139
- Peer Reviewed
- Data Source
  KAKENHI-PUBLICLY-20H05265, KAKENHI-PROJECT-17K05536, KAKENHI-PROJECT-19K03742, KAKENHI-PROJECT-20K14412, KAKENHI-PROJECT-20H00122, KAKENHI-PLANNED-19H05821
[Journal Article] Majorana correlations in the Kitaev model with ordered-flux structures2021
- Author(s)
  A. Koga, Y. Murakami, and J. Nasu
- Journal Title
  
  Phys. Rev. B
  
  Volume: 103 Issue: 21 Pages: 2144211-9
- DOI
  10.1103/physrevb.103.214421
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K05536, KAKENHI-PROJECT-19K03742, KAKENHI-PROJECT-20H00122, KAKENHI-PLANNED-19H05821
[Journal Article] Unconventional Pairing from Local Orbital Fluctuations in Strongly Correlated A3C602021
- Author(s)
  C. Yue, S. Hoshino, A. Koga, and P. Werner
- Journal Title
  
  Phys. Rev. B
  
  Volume: 104 Issue: 7
- DOI
  10.1103/physrevb.104.075107
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K05536
[Journal Article] High-harmonic generation in one-dimensional Mott insulator2021
- Author(s)
  Y. Murakami, S. Takayoshi, A. Koga, and P. Werner
- Journal Title
  
  Phys. Rev. B
  
  Volume: 103 Issue: 3 Pages: 0351101-14
- DOI
  10.1103/physrevb.103.035110
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K05536, KAKENHI-PROJECT-20K14412, KAKENHI-PROJECT-19K23425, KAKENHI-PLANNED-19H05821, KAKENHI-PUBLICLY-20H05265
[Journal Article] Antiferromagnetically Ordered State in the Half-Filled Hubbard Model on the Socolar Dodecagonal Tiling2021
- Author(s)
  A. Koga
- Journal Title
  
  MATERIALS TRANSACTIONS
  
  Volume: 62 Issue: 3 Pages: 360-366
- DOI
  10.2320/matertrans.MT-MB2020003
- NAID
  130007990804
- ISSN
  1345-9678, 1347-5320
- Year and Date
  2021-03-01
- Language
  English
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K05536, KAKENHI-PLANNED-19H05821
[Journal Article] Effect of Electron-Electron Interactions on Metallic State in Quasicrystals2021
- Author(s)
  S. Sakai and A. Koga
- Journal Title
  
  MATERIALS TRANSACTIONS
  
  Volume: 62 Issue: 3 Pages: 380-385
- DOI
  10.2320/matertrans.MT-MB2020001
- NAID
  130007990798
- ISSN
  1345-9678, 1347-5320
- Year and Date
  2021-03-01
- Language
  English
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-17K05536, KAKENHI-PUBLICLY-20H05279, KAKENHI-PLANNED-19H05821, KAKENHI-PROJECT-16H06345
[Journal Article] Spin transport in the Quantum Spin Liquid State in the S=1 Kitaev model: role of the fractionalized quasiparticles2020
- Author(s)
  A. Koga, T. Minakawa, Y. Murakami, and J. Nasu
- Journal Title
  
  J. Phys. Soc. Jpn.
  
  Volume: 89 Issue: 3 Pages: 33701-33701
- DOI
  10.7566/jpsj.89.033701
- NAID
  40022185595
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K05536, KAKENHI-PROJECT-19K03742, KAKENHI-PROJECT-19K23425, KAKENHI-PUBLICLY-18H04223, KAKENHI-PROJECT-16H02206
[Journal Article] Majorana-mediated spin transport in Kitaev quantum spin liquids2020
- Author(s)
  T. Minakawa, Y. Murakami, A. Koga, and J. Nasu
- Journal Title
  
  Phys. Rev. Lett.
  
  Volume: 125 Issue: 4 Pages: 0472041-7
- DOI
  10.1103/physrevlett.125.047204
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K05536, KAKENHI-PROJECT-19K03742, KAKENHI-PROJECT-19K23425, KAKENHI-PLANNED-19H05821
[Journal Article] Collective Modes in Excitonic Insulators: Effects of Electron-Phonon Coupling and Signatures in Optical Response2020
- Author(s)
  Y. Murakami, D. Golez, T. Kaneko, A. Koga, A. J. Millis, and P. Werner
- Journal Title
  
  Phys. Rev. B
  
  Volume: 101 Issue: 19 Pages: 1951181-17
- DOI
  10.1103/physrevb.101.195118
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K05536, KAKENHI-PROJECT-19K23425, KAKENHI-PLANNED-19H05821
[Journal Article] Superlattice structure in the antiferromagnetically ordered state in the Hubbard model on the Ammann-Beenker tiling2020
- Author(s)
  A. Koga
- Journal Title
  
  Phys. Rev. B
  
  Volume: 102 Issue: 11 Pages: 1151251-10
- DOI
  10.1103/physrevb.102.115125
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K05536, KAKENHI-PLANNED-19H05821
[Journal Article] Excitonic condensation reflecting electronic states in two-band Penrose-Hubbard model2020
- Author(s)
  K. Inayoshi, Y. Murakami, and A. Koga
- Journal Title
  
  J. Phys. Soc. Jpn.
  
  Volume: 89 Issue: 6 Pages: 0640021-8
- DOI
  10.7566/jpsj.89.064002
- NAID
  40022254127
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K05536, KAKENHI-PROJECT-19K23425, KAKENHI-PLANNED-19H05821, KAKENHI-PUBLICLY-20H05265
[Journal Article] Residual entropy and spin fractionalizations in the mixed-spin Kitaev model2019
- Author(s)
  A. Koga and J. Nasu
- Journal Title
  
  Phys. Rev. B
  
  Volume: 100 Issue: 10 Pages: 1004041-5
- DOI
  10.1103/physrevb.100.100404
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K05536, KAKENHI-PROJECT-19K03742, KAKENHI-PUBLICLY-18H04223, KAKENHI-PROJECT-16H02206
[Journal Article] Symmetry breaking states in the half-filled two-orbital Hubbard model with crystalline electric field2019
- Author(s)
  K. Ishigaki, J. Nasu, and A. Koga
- Journal Title
  
  J. Phys. Soc. Jpn.
  
  Volume: 88 Issue: 2 Pages: 0247021-5
- DOI
  10.7566/jpsj.88.024702
- NAID
  210000135099
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K05536, KAKENHI-PUBLICLY-18H04223, KAKENHI-PROJECT-16K17747
[Journal Article] Low temperature properties in the Bilayer Kitaev model2019
- Author(s)
  H. Tomishige, J. Nasu, and A. Koga
- Journal Title
  
  Phys. Rev. B
  
  Volume: 99 Issue: 17 Pages: 1744241-5
- DOI
  10.1103/physrevb.99.174424
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K05536, KAKENHI-PROJECT-19K03742, KAKENHI-PUBLICLY-18H04223, KAKENHI-PROJECT-16H02206
[Journal Article] Staggered ordered phases in the three-orbital Hubbard model2019
- Author(s)
  K. Ishigaki, J. Nasu, A. Koga, S. Hoshino, and P. Werner
- Journal Title
  
  Phys. Rev. B
  
  Volume: 99 Issue: 8 Pages: 0851311-11
- DOI
  10.1103/physrevb.99.085131
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K05536, KAKENHI-PROJECT-18K13490, KAKENHI-PUBLICLY-18H04223, KAKENHI-PROJECT-16H04021, KAKENHI-PROJECT-16K17747
[Journal Article] Magnetic properties in the metallic magnets with large anisotropy2019
- Author(s)
  Y. Taguchi, J. Nasu, A. Koga, T. Yoshioka, H. Tsuchiura
- Journal Title
  
  Journal of Low Temperature Physics
  
  Volume: 196 Issue: 1-2 Pages: 321-326
- DOI
  10.1007/s10909-019-02200-y
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18K04678
[Journal Article] Quantum and classical behavior of spin-S Kitaev models in the anisotropic limit2019
- Author(s)
  Minakawa Tetsuya、Nasu Joji、Koga Akihisa
- Journal Title
  
  Physical Review B
  
  Volume: 99 Issue: 10 Pages: 104408-104408
- DOI
  10.1103/physrevb.99.104408
- Peer Reviewed
- Data Source
  KAKENHI-PUBLICLY-18H04223, KAKENHI-PROJECT-16H02206, KAKENHI-PROJECT-16K17747, KAKENHI-PROJECT-17K05536
[Journal Article] Ferromagnetic Instability for single-band Hubbard model in the strong-coupling regime2019
- Author(s)
  Y. Kamogawa, J. Nasu, and A. Koga
- Journal Title
  
  Phys. Rev. B
  
  Volume: 99 Issue: 23 Pages: 2351071-6
- DOI
  10.1103/physrevb.99.235107
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K05536, KAKENHI-PROJECT-19K03742, KAKENHI-PUBLICLY-18H04223
[Journal Article] Ground-state and thermodynamic properties of an S=1 Kitaev model2018
- Author(s)
  A. Koga, H. Tomishige, and J. Nasu
- Journal Title
  
  J. Phys. Soc. Jpn.
  
  Volume: 87 Issue: 6 Pages: 0637031-4
- DOI
  10.7566/jpsj.87.063703
- NAID
  210000134846
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K05536, KAKENHI-PUBLICLY-18H04223, KAKENHI-PROJECT-16K17747
[Journal Article] Role of spin-orbit coupling in the Kugel-Khomskii model on the honeycomb lattice2018
- Author(s)
  A. Koga, S. Nakauchi, and J. Nasu
- Journal Title
  
  Phys. Rev. B
  
  Volume: 97 Issue: 9 Pages: 0944271-5
- DOI
  10.1103/physrevb.97.094427
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K05536, KAKENHI-PROJECT-16K17747, KAKENHI-PUBLICLY-16H00987, KAKENHI-PUBLICLY-16H01066
[Journal Article] Charge Kondo Effect and Superconductivity in the Falikov-Kimball model with the Pair Hopping2018
- Author(s)
  R. Shinzaki, J. Nasu, and A. Koga
- Journal Title
  
  Phys. Rev. B
  
  Volume: 97 Issue: 12 Pages: 1251301-6
- DOI
  10.1103/physrevb.97.125130
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K05536, KAKENHI-PROJECT-16K17747, KAKENHI-PUBLICLY-16H00987, KAKENHI-PUBLICLY-16H01066
[Journal Article] Interlayer Coupling Effect on a Bilayer Kitaev Model2018
- Author(s)
  H. Tomishige, J. Nasu, and A. Koga
- Journal Title
  
  Phys. Rev. B
  
  Volume: 97 Issue: 9 Pages: 0944031-9
- DOI
  10.1103/physrevb.97.094403
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K05536, KAKENHI-PROJECT-16K17747, KAKENHI-PUBLICLY-16H00987, KAKENHI-PUBLICLY-16H01066
[Journal Article] Incipient and well-developed entropy plateaus in spin-S Kitaev models2018
- Author(s)
  J. Oitmaa, A. Koga, and R. R. P. Singh
- Journal Title
  
  Phys. Rev. B
  
  Volume: 98 Issue: 21 Pages: 2144041-6
- DOI
  10.1103/physrevb.98.214404
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K05536
[Journal Article] Spontaneously orbital-selective superconductivity in a three-orbital Hubbard model2018
- Author(s)
  K. Ishigaki, J. Nasu, A. Koga, S. Hoshino, and P. Werner
- Journal Title
  
  Phys. Rev. B
  
  Volume: 98 Issue: 23 Pages: 2351201-7
- DOI
  10.1103/physrevb.98.235120
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K05536, KAKENHI-PUBLICLY-18H04223, KAKENHI-PROJECT-16H04021, KAKENHI-PROJECT-16K17747
[Journal Article] Cluster Size Effects on Electronic Reconstruction in Quasiperiodic System2017
- Author(s)
  R. Shinzaki, J. Nasu, and A. Koga
- Journal Title
  
  Journal of Physics: Conference Series
  
  Volume: 809 Pages: 0120221-4
- DOI
  10.1088/1742-6596/809/1/012022
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PUBLICLY-16H00987, KAKENHI-PROJECT-25800193, KAKENHI-PROJECT-16K17747, KAKENHI-PROJECT-17K05536, KAKENHI-PUBLICLY-16H01066
[Journal Article] Antiferromagnetic order in the Hubbard Model on the Penrose Lattice2017
- Author(s)
  A. Koga and H. Tsunetsugu
- Journal Title
  
  Phys. Rev. B
  
  Volume: 96 Issue: 21 Pages: 2144021-17
- DOI
  10.1103/physrevb.96.214402
- NAID
  130007649114
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K05536, KAKENHI-PUBLICLY-16H01066
[Journal Article] Superconductivity on a Quasiperiodic Lattice: Extended-to-Localized Crossover of Cooper Pairs2017
- Author(s)
  S. Sakai, N. Takemori, A. Koga, and R. Arita
- Journal Title
  
  Physical Review B
  
  Volume: 95 Issue: 2 Pages: 0245091-5
- DOI
  10.1103/physrevb.95.024509
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PUBLICLY-16H01066, KAKENHI-PROJECT-15H03696, KAKENHI-PROJECT-16H07447, KAKENHI-PROJECT-25800193, KAKENHI-PROJECT-26800179, KAKENHI-PROJECT-16H06345
[Journal Article] Spontaneously symmetry breaking states in the attractive SU(N) Hubbard model2017
- Author(s)
  A. Koga and H. Yanatori
- Journal Title
  
  Journal of the Physical Society of Japan
  
  Volume: 86 Issue: 3 Pages: 0347021-7
- DOI
  10.7566/jpsj.86.034702
- NAID
  40021129711
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PUBLICLY-16H01066, KAKENHI-PROJECT-25800193
[Journal Article] Finite Temperature Properties of Three-Component Fermion Systems in Optical Lattice2016
- Author(s)
  H. Yanatori and A. Koga
- Journal Title
  
  Journal of Physical Society of Japan
  
  Volume: 85 Issue: 1 Pages: 0140021-5
- DOI
  10.7566/jpsj.85.014002
- NAID
  40020699806
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-25800193
[Journal Article] Magnetic Response and Valence Fluctuations in the Extended Anderson Lattice Model with Quasiperiodicity2016
- Author(s)
  R. Shinzaki, J. Nasu, and A. Koga
- Journal Title
  
  Journal of the Physical Society of Japan
  
  Volume: 85 Issue: 11 Pages: 1147061-6
- DOI
  10.7566/jpsj.85.114706
- NAID
  210000134154
- Peer Reviewed
- Data Source
  KAKENHI-PUBLICLY-16H00987, KAKENHI-PUBLICLY-16H01066, KAKENHI-PROJECT-25800193, KAKENHI-PROJECT-16K17747
[Journal Article] DMFT Study for Valence Fluctuations in the Extended Periodic Anderson Model2016
- Author(s)
  R. Shinzaki, J. Nasu, and A. Koga
- Journal Title
  
  Journal of Physics Conference Series
  
  Volume: 683 Pages: 021041-021041
- DOI
  10.1088/1742-6596/683/1/012041
- Peer Reviewed / Acknowledgement Compliant / Open Access
- Data Source
  KAKENHI-PROJECT-25800193
[Journal Article] Finite Temperature Phase Transitions in the SU(N) Hubbard model2016
- Author(s)
  H. Yanatori and A. Koga
- Journal Title
  
  Physical Review B
  
  Volume: 94 Issue: 4 Pages: 0411101-5
- DOI
  10.1103/physrevb.94.041110
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PUBLICLY-16H01066, KAKENHI-PROJECT-25800193
[Journal Article] Phase transitions in the Hubbard model for the bismuth nickelate2016
- Author(s)
  S. Kojima, J. Nasu, and A. Koga
- Journal Title
  
  Physical Review B
  
  Volume: 94 Issue: 4 Pages: 0451031-6
- DOI
  10.1103/physrevb.94.045103
- Peer Reviewed
- Data Source
  KAKENHI-PUBLICLY-16H00987, KAKENHI-PUBLICLY-16H01066, KAKENHI-PROJECT-25800193, KAKENHI-PROJECT-16K17747
[Journal Article] Intersite electron correlations in a Hubbard model on inhomogeneous lattices2016
- Author(s)
  N. Takemori, A. Koga, and H. Hafermann
- Journal Title
  
  Journal of Physics Conference Series
  
  Volume: 683 Pages: 0120401-6
- DOI
  10.1088/1742-6596/683/1/012040
- Peer Reviewed / Acknowledgement Compliant / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25800193, KAKENHI-PROJECT-15J12110
[Journal Article] Transport properties for a quantum dot coupled to normal leads with a pseudogap2015
- Author(s)
  Bunpei Hara, Akihisa Koga, and Tomosuke Aono
- Journal Title
  
  Phys. Rev. B
  
  Volume: 92 Issue: 8 Pages: 0811031-5
- DOI
  10.1103/physrevb.92.081103
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-15K05120, KAKENHI-PROJECT-25800193
[Journal Article] Superconductivity in the two-band Hubbard model2015
- Author(s)
  A. Koga and P. Werner
- Journal Title
  
  Physical Review B
  
  Volume: 91 Issue: 8 Pages: 0851081-7
- DOI
  10.1103/physrevb.91.085108
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-25800193
[Journal Article] Valence Fluctuations and Electric Reconstruction in the Extended Anderson Model on the Two-Dimensional Penrose Lattice2015
- Author(s)
  S. Takemura, N. Takemori, and A. Koga
- Journal Title
  
  Physical Review B
  
  Volume: 91 Issue: 16 Pages: 0851081-7
- DOI
  10.1103/physrevb.91.165114
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-25800193, KAKENHI-PROJECT-15J12110
[Journal Article] DMFT study of the local correlation effects in quasi-periodic system2015
- Author(s)
  N. Takemori and A. Koga
- Journal Title
  
  Journal of Physics: Conference Series
  
  Volume: 592 Pages: 0120381-6
- DOI
  10.1088/1742-6596/592/1/012038
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-25800193
[Journal Article] Local Electron Correlations in a Two-dimensional Hubbard Model on the Penrose Lattice2015
- Author(s)
  N. Takemori, A. Koga
- Journal Title
  
  Journal of Physical Society of Japan
  
  Volume: 84 Issue: 2 Pages: 0237011-5
- DOI
  10.7566/jpsj.84.023701
- NAID
  40020360527
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-25800193
[Journal Article] Stabilities of Superfluid and Density Wave States in Fermionic Mass Imbalanced Optical Lattices2015
- Author(s)
  N. Takemori and A. Koga
- Journal Title
  
  JPS Conference Proceedings
  
  Volume: 4 Pages: 0110061-4
- DOI
  10.7566/jpscp.4.011006
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-25800193
[Journal Article] Stability of the Superfluid State in Three-Component Fermionic Optical Lattice Systems2014
- Author(s)
  Y. Okanami, N. Takemori and A. Koga
- Journal Title
  
  Physical Review A
  
  Volume: 89 Issue: 5 Pages: 0536221-8
- DOI
  10.1103/physreva.89.053622
- NAID
  110009754592
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-25800193
[Journal Article] Supersolid states in a hard-core Bose-Hubbard model on a layered triangular lattice2014
- Author(s)
  R. Suzuki and A. Koga
- Journal Title
  
  Journal of Physical Society of Japan
  
  Volume: 83 Issue: 6 Pages: 0640031-6
- DOI
  10.7566/jpsj.83.064003
- NAID
  40020091515
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-25800193
[Journal Article] Diagrammatic Quantum Monte Carlo Study of Nonequilibrium Transport through a Quantum Dot coupled to Normal and Superconducting Leads2014
- Author(s)
  A. Koga
- Journal Title
  
  JPS Conference Proceedings
  
  Volume: 3 Pages: 0120181-6
- DOI
  10.7566/jpscp.4.011003
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-25800193
[Journal Article] Cluster mean-field approach with density matrix renormalization group: Application to the hard-core bosonic Hubbard model on a triangular lattice2014
- Author(s)
  R. Suzuki and A. Koga
- Journal Title
  
  JPS Conference Proceedings
  
  Volume: 3 Pages: 0160051-6
- DOI
  10.7566/jpscp.3.016005
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-25800193
[Journal Article] Valence Fluctuations in the Extended Periodic Anderson Model at Finite Temperatures2014
- Author(s)
  Y. Kojima and A. Koga
- Journal Title
  
  JPS Conference Proceedings
  
  Volume: 1 Pages: 0121061-4
- DOI
  10.7566/jpscp.1.012106
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-25800193
[Journal Article] Low temperature properties of the fermionic mixtures with mass imbalance in optical lattice2012
- Author(s)
  N. Takemori and A. Koga
- Journal Title
  
  J. Phys. Soc. Jpn.
  
  Volume: 81 Pages: 0630021-4
- NAID
  40019308618
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] A study on correlation effects in two dimensional topological insulators2012
- Author(s)
  Y. Tada, R. Peters, M. Oshikawa, A. Koga, N. Kawakami, and S. Fujimoto
- Journal Title
  
  Phys. Rev.
  
  Volume: B85 Pages: 1651381-18
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Superfluid state in the periodic Anderson model with attractive interactions2011
- Author(s)
  A.Koga
- Journal Title
  
  Journal of Physics : Conference Series
  
  Volume: 302 Pages: 0120401-6
- DOI
  10.1088/1742-6596/302/1/012040
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Superfluid state in the periodic Anderson model with attractive interactions2011
- Author(s)
  A. Koga and P. Werner
- Journal Title
  
  J. Phys.: Conf. Ser.
  
  Volume: 302 Pages: 0120401-6
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Superfluid gap formation in a fermionic optical lattice with spin imbalanced populations2011
- Author(s)
  A. Koga and P. Werner
- Journal Title
  
  J. Phys.: Conf. Ser.
  
  Volume: 273 Pages: 0121161-4
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Low temperature properties of the infinite-dimensional attractive Hubbard model2011
- Author(s)
  A.Koga
- Journal Title
  
  Physical Review A
  
  Volume: 84 Issue: 2 Pages: 0236381-7
- DOI
  10.1103/physreva.84.023638
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Pseudogap behavior in the infinite dimensional attractive Hubbard model2011
- Author(s)
  A.Koga
- Journal Title
  
  Modern Physics Letter B
  
  Volume: 25 Issue: 12n13 Pages: 973-978
- DOI
  10.1142/s0217984911026681
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Polarized superfluid state in a three-dimensional fermionic optical lattice2011
- Author(s)
  A.Koga
- Journal Title
  
  Physica E
  
  Volume: 43 Pages: 697-701
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Pseudogap behavior in the infinite dimensional attractive Hubbard model2011
- Author(s)
  A. Koga and P. Werner
- Journal Title
  
  Mod. Phys. Lett.
  
  Volume: B25 Pages: 973-978
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Superfluid gap formation in a fermionic optical lattice with spin imbalanced populations2011
- Author(s)
  A.Koga
- Journal Title
  
  Journal of Physics : Conference Series
  
  Volume: 273 Pages: 0121161-4
- DOI
  10.1088/1742-6596/273/1/012116
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Polarized superfluid state in a three-dimensional fermionic optical lattice2011
- Author(s)
  A. Koga, J. Bauer, P. Werner
- Journal Title
  
  Th. Pruschke, Physica
  
  Volume: E43 Pages: 697-701
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Low temperature properties of the infinite-dimensional attractive Hubbard model2011
- Author(s)
  A. Koga and P. Werner
- Journal Title
  
  Phys. Rev.
  
  Volume: A84 Pages: 0236381-7
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Magnetic transition in the Hubbard model on the triangular lattice2010
- Author(s)
  T. Yoshioka, A. Koga, and N. Kawakami
- Journal Title
  
  Physica
  
  Volume: B405
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Mott transition in the Hubbard model on the triangular lattice2010
- Author(s)
  T. Yoshioka, A. Koga, and N. Kawakami
- Journal Title
  
  Phys. Status Solidi
  
  Volume: B247 Pages: 635-637
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Polarized Superfluidity in the Imbalanced Attractive Hubbard Model2010
- Author(s)
  A.Koga , P.Werner
- Journal Title
  
  J.Phys.Soc.Jpn. 79
- NAID
  40017366100
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Superfluid properties of ultracold fermionic atoms in two-dimensional optical lattices2010
- Author(s)
  Y. Fujihara, A. Koga and N. Kawakami
- Journal Title
  
  Phys. Rev.
  
  Volume: A81 Pages: 0636271-7
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Superfluid properties of ultracold fermionic atoms in two-dimensional optical lattices2010
- Author(s)
  Y.Fujihara, A.Koga, N.Kawakami
- Journal Title
  
  Phys.Rev.A 81
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Superfluid state in the periodic Anderson model with attractive interactions2010
- Author(s)
  A. Koga and P. Werner, J. Phys
- Journal Title
  
  Soc. Jpn.
  
  Volume: 79 Pages: 1144011-7
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Polarized Superfluidity in the Imbalanced Attractive Hubbard Model2010
- Author(s)
  A.Koga
- Journal Title
  
  Journal of Physical Society of Japan
  
  Volume: 79
- NAID
  40017366100
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Magnetically Ordered State of Cold Fermions on a Decorated Square Lattice2010
- Author(s)
  K. Noda, A. Koga, N. Kawakami and Th. Pruschke
- Journal Title
  
  J. Low Temp. Phys.
  
  Volume: 158 Pages: 79-84
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Superfluid state in the periodic Anderson model with attractive interactions2010
- Author(s)
  A.Koga , P.Werner
- Journal Title
  
  J.Phys.Soc.Jpn. 79
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Analysis of superfluid state of ultracold fermions with attractive interactions in two-dimensional optical lattices2010
- Author(s)
  Y. Fujihara, A. Koga, and N. Kawakami
- Journal Title
  
  Physica
  
  Volume: C470
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Superfluid state in the periodic Anderson model with attractive interactions2010
- Author(s)
  A.Koga
- Journal Title
  
  Journal of Physical Society of Japan
  
  Volume: 79
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Polarized Superfluidity in the Imbalanced Attractive Hubbard Model2010
- Author(s)
  A. Koga and P. Werner, J. Phys
- Journal Title
  
  J. Phys. Soc. Jpn.
  
  Volume: 79 Pages: 0644011-6
- NAID
  40017366100
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Spatially-modulated Superfluid States in Fermionic Optical Ladder Systems with Repulsive Interactions2009
- Author(s)
  Y. Fujihara, A. Koga, and N. Kawakami
- Journal Title
  
  Phys. Rev
  
  Volume: A79 Pages: 0136101-7
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Supersolid state in fermionic optical lattice systems2009
- Author(s)
  A. Koga
- Journal Title
  
  Physical Review A 79
  
  Pages: 0136071-6
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Ferromagnetism of cold fermions loaded into a decorated square lattice2009
- Author(s)
  K.Noda, A.Koga, N.Kawakami, Th.Pruschke
- Journal Title
  
  Phys.Rev.A 80
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Mott insulating state in a quarter-filled two-orbital Hubbard chain with different bandwidths2009
- Author(s)
  S. Miyashita, Y. Yamashita, K. Yonemitsu, A. Koga, and N. Kawakami
- Journal Title
  
  J. Phys.: Conf. Ser.
  
  Volume: 150 Pages: 0421281-4
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Superfluidity and magnetism in two-dimensional fermionic optical lattice systems2009
- Author(s)
  Y. Fujihara, A. Koga, and N. Kawakami
- Journal Title
  
  Physica
  
  Volume: B404 Pages: 3324-3327
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Quantum Phase Transitions in the Hubbard Model on a Triangular Lattice2009
- Author(s)
  T.Yoshioka, A.Koga, N.Kawakami
- Journal Title
  
  Phys.Rev.Lett. 103
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Supersolid state in fermionic optical lattice systems2009
- Author(s)
  A. Koga, T. Higashiyama, K. Inaba, S. Suga and N. Kawakami
- Journal Title
  
  Phys. Rev.
  
  Volume: A79 Pages: 697-701
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Supersolid state in a fermionic optical lattice system2009
- Author(s)
  A. Koga, T. Higashiyama, K. Inaba, S. Suga and N. Kawakami
- Journal Title
  
  J. Phys.: Conf. Ser.
  
  Volume: 150 Pages: 0320461-4
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Quantum Phase Transitions in the Hubbard Model on a Triangular Lattice2009
- Author(s)
  T. Yoshioka, A. Koga, and N. Kawakami
- Journal Title
  
  Phys. Rev. Lett.
  
  Volume: 103 Pages: 0364011-4
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Ferromagnetism of cold fermions loaded into a decorated square lattice2009
- Author(s)
  K. Noda, A. Koga, N. Kawakami, and Th. Pruschke
- Journal Title
  
  Phys. Rev.
  
  Volume: A80 Pages: 0636221-7
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Zero-temperature Phase Diagram of Two Dimensional Hubbard Model2009
- Author(s)
  K. Inaba, A. Koga, S. Suga, and N. Kawakami
- Journal Title
  
  J. Phys.: Conf. Ser.
  
  Volume: 150 Pages: 0420661-4
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Magnetic and Orbital Properties of the two-band Hubbard Model with Different Bandwidths2009
- Author(s)
  Y. Koyama, A. Koga, N. Kawakami, and P. Werner
- Journal Title
  
  Physica
  
  Volume: B404 Pages: 3267-3270
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Mott Transition in the Hubbard Model on Checkerboard Lattice2008
- Author(s)
  T. Yoshioka, A. Koga, and N. Kawakami
- Journal Title
  
  J. Phys. Soc. Jpn.
  
  Volume: 77 Pages: 1047021-7
- NAID
  110006969298
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Phase transitions in the extended periodic Anderson model2008
- Author(s)
  A. Koga
- Journal Title
  
  Physica B 403
  
  Pages: 1378-1380
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17740226
[Journal Article] Frustration effects in an anisotropic checkerboard lattice Hubbard model2008
- Author(s)
  T. Yoshioka, A. Koga, and N. Kawakami
- Journal Title
  
  Phys. Rev.
  
  Volume: B78 Pages: 1651131-6
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Quantum phase transitions in the extended periodic Anderson model2008
- Author(s)
  A. Koga
- Journal Title
  
  Physical Review B 77
  
  Pages: 451201-7
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17740226
[Journal Article] Supersolid state of ultracold fermions in an optical lattice2008
- Author(s)
  A. Koga, T. Higashiyama, K. Inaba, S. Suga, and N. Kawakami
- Journal Title
  
  J. Phys. Soc. Jpn.
  
  Volume: 77 Pages: 736021-4
- NAID
  110006821281
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Magnetic properties of the extended periodic Anderson model2008
- Author(s)
  A. Koga
- Journal Title
  
  Journal of Physical Society of Japan 77
  
  Pages: 337041-4
- NAID
  110006633462
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17740226
[Journal Article] Supersolid state of ultracold fermions in an optical lattice2008
- Author(s)
  A. Koga
- Journal Title
  
  Journal of Physical Society of Japan 77
  
  Pages: 0736021-4
- NAID
  110006821281
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Variational Monte Carlo analysis of singlet-pairing state in a system with inhomogeneous potential2008
- Author(s)
  Y. Fujihara, A. Koga, and N. Kawakami
- Journal Title
  
  J. Phys. Chem. Solid
  
  Volume: 69 Pages: 3388-3391
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740194
[Journal Article] Quantum Phase Transitions in the Hubbard Model on the Planar Pyrochlore Lattice2007
- Author(s)
  A.Koga
- Journal Title
  
  Journal of Magnetism and Magnetic Materials 310
  
  Pages: 867-869
- Data Source
  KAKENHI-PROJECT-17740226
[Journal Article] Quantum Phase Transitions in the Hubbard Model on the Planar Pyrochlore Lattice2007
- Author(s)
  A. Koga
- Journal Title
  
  Journal of Magnetism and Magnetic Materials 310
  
  Pages: 867-869
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17740226
[Journal Article] Quantum phase transitions in the Hubbard model on the planar pyrochlore lattice2007
- Author(s)
  A. Koga
- Journal Title
  
  Journal of Physics Condensed Matter 460-462
  
  Pages: 1070-1071
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17740226
[Journal Article] Variational Monte Carlo Study of Two Dimensional Multi-orbital Hubbard Model2006
- Author(s)
  A.Koga
- Journal Title
  
  AIP Conference Proceedings 850
  
  Pages: 1458-1459
- Data Source
  KAKENHI-PROJECT-17740226
[Journal Article] Mott transitions in the multi-orbital systems2005
- Author(s)
  Akihisa Koga
- Journal Title
  
  Physica B Vol.359
  
  Pages: 1366-1368
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-15540342
[Journal Article] Spin, charge and orbital fluctuations in a multi-orbital Mott insulator2005
- Author(s)
  Akihisa Koga
- Journal Title
  
  Phys.Rev. B72
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-15540342
[Journal Article] Spin, charge, and orbital fluctuations in a multiorbital Molt insulator2005
- Author(s)
  A.Koga
- Journal Title
  
  Physical Review B 72
  
  Pages: 45128-45128
- Data Source
  KAKENHI-PROJECT-17740226
[Journal Article] Spin, charge and orbital fluctuations in a multi-orbital Mott insulator2005
- Author(s)
  Akihisa Koga
- Journal Title
  
  Phys.Rev. Vol.B72
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-15540342
[Journal Article] Mott transitions in the multi-orbital systems2005
- Author(s)
  Akihisa Koga
- Journal Title
  
  Physica B 359
  
  Pages: 1366-1368
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-15540342
[Journal Article] Mott Transitions in Multi-Orbital Hubbard Systems2005
- Author(s)
  Akihisa Koga
- Journal Title
  
  Prog.Theor.Phys.Suppl. 160
  
  Pages: 253-273
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-15540342
[Journal Article] 軌道依存モット転移(解説記事)2004
- Author(s)
  古賀昌久
- Journal Title
  
  固体物理 63
  
  Pages: 461-467
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-15540342
[Journal Article] Orbital-selective Mott transitions in the degenerate Hubbard model2004
- Author(s)
  Akihisa Koga
- Journal Title
  
  Phys.Rev.Lett. Vol.92
- Data Source
  KAKENHI-PROJECT-15540342
[Journal Article] Orbital-selective Mott transitions in the degenerated Hubbard model2004
- Author(s)
  Akihisa Koga
- Journal Title
  
  Phys.Rev.Lett. 92
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-15540342
[Presentation] 二次元周期・準周期格子におけるハイパーユニフォーミティ2024
- Author(s)
  古賀昌久
- Organizer
  研究会 "第二回準周期電子状態とマルチフラクタリティ・ハイパーユニフォーミティ"
- Invited
- Data Source
  KAKENHI-PROJECT-22K03525
[Presentation] 二次元周期格子・準周期格子におけるハイパーユニフォーミティ2023
- Author(s)
  古賀昌久
- Organizer
  第28回準結晶研究会
- Data Source
  KAKENHI-PROJECT-22K03525
[Presentation] 二次元準周期タイルとハイパーユニフォーミティ2023
- Author(s)
  古賀昌久
- Organizer
  研究会 "準周期電子状態とマルチフラクタリティ・ハイパーユニフォーミティ"
- Invited
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] Hyperuniformity in the two-dimensional periodic and quasiperiodic lattices2023
- Author(s)
  Akihisa Koga
- Organizer
  ICQ15 - The 15th International Conference on Quasicrystals
- Int'l Joint Research
- Data Source
  KAKENHI-PLANNED-19H05821
[Presentation] Hexagonal metallic-mean tilings as aperiodic approximants of the honeycomb lattice2023
- Author(s)
  T. Matsubara, A. Koga, T. Dotera
- Organizer
  International Conference on Complex Orders in Condensed Matter:aperiodic order, local order, electronic order, hidden order
- Int'l Joint Research
- Data Source
  KAKENHI-PLANNED-19H05821
[Presentation] 準結晶と不整合変調構造を繋ぐ近似準結晶2023
- Author(s)
  松原虎之介, 古賀昌久, 堂寺知成
- Organizer
  第28回準結晶研究会
- Data Source
  KAKENHI-PLANNED-19H05821
[Presentation] ハニカム格子を近似する非周期的貴金属比タイリングII2023
- Author(s)
  松原虎之助, 古賀昌久, 堂寺知成
- Organizer
  日本物理学会第78回年次大会
- Data Source
  KAKENHI-PROJECT-21H01025
[Presentation] キタエフ模型におけるスピン輸送2023
- Author(s)
  古賀昌久
- Organizer
  研究会 "量子凝縮相研究における新潮流"
- Invited
- Data Source
  KAKENHI-PROJECT-22K03525
[Presentation] Hexagonal metallic-mean tilings as aperiodic approximants of the honeycomb lattice2023
- Author(s)
  Akihisa Koga
- Organizer
  ICQ15 - The 15th International Conference on Quasicrystals
- Int'l Joint Research
- Data Source
  KAKENHI-PLANNED-19H05821
[Presentation] Hyperuniformity in the two-dimensional periodic and quasiperiodic lattices2023
- Author(s)
  Akihisa Koga, Shiro Sakai
- Organizer
  International Conference on Complex Orders in Condensed Matter:aperiodic order, local order, electronic order, hidden order
- Int'l Joint Research
- Data Source
  KAKENHI-PLANNED-19H05821
[Presentation] Hyperuniformity in the two-dimensional periodic and quasiperiodic lattices2023
- Author(s)
  Akihisa Koga, Shiro Sakai
- Organizer
  第28回準結晶研究会
- Data Source
  KAKENHI-PLANNED-19H05821
[Presentation] ハニカム格子を近似する非周期的貴金属比タイリング2023
- Author(s)
  古賀昌久, 松原虎之介 , 堂寺知成
- Organizer
  第10回領域会議
- Data Source
  KAKENHI-PLANNED-19H05821
[Presentation] 二次元準周期タイルとハイパーユニフォーミティ2023
- Author(s)
  古賀昌久
- Organizer
  研究会 "準周期電子状態とマルチフラクタリティ・ハイパーユニフォーミティ"
- Invited
- Data Source
  KAKENHI-PROJECT-22K03525
[Presentation] ハイパーマテリアルの磁性・量子臨界現象2023
- Author(s)
  古賀昌久
- Organizer
  第11回領域会議
- Data Source
  KAKENHI-PLANNED-19H05821
[Presentation] ハニカム格子上のハバードモデルにおける散逸誘起フェルミ超流動2023
- Author(s)
  竹森颯真, 山本和樹, 古賀昌久
- Organizer
  日本物理学会第78回年次大会
- Data Source
  KAKENHI-PROJECT-21H01025
[Presentation] Majorana-mediated spin transport in the Kitaev model at finite temperatures2022
- Author(s)
  A. Koga
- Organizer
  International Workshop on spintronics 2022 "Spin Argentina"
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-22K03525
[Presentation] A 6-fold golden-mean tiling with four tiles2022
- Author(s)
  A. Koga
- Organizer
  10th International Conference on Aperiodic Crystals (APERIODIC2022)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-22K03525
[Presentation] Majorana-mediated spin transport in the S=1/2 Kitaev model at finite temperatures2022
- Author(s)
  A. Koga
- Organizer
  11th International Conference on Highly Frustrated Magnetism 2022 (HFM22)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] 六回対称黄金比準周期タイルにおけるフェリ磁性2022
- Author(s)
  古賀昌久, S. Coates
- Organizer
  2022年春季大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] Majorana-mediated spin transport in the S=1/2 Kitaev model at finite temperatures2022
- Author(s)
  A. Koga
- Organizer
  International Conference on Strongly Correlated Electron Systems (SCES2022)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] キタエフ模型のスピン輸送特性に対する熱揺らぎの効果2022
- Author(s)
  田口滉一, 村上雄太, 古賀昌久
- Organizer
  2022年春季大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] Majorana-mediated spin transport in the S=1/2 Kitaev model at finite temperatures2022
- Author(s)
  A. Koga
- Organizer
  11th International Conference on Highly Frustrated Magnetism 2022 (HFM22)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-22K03525
[Presentation] A 6-fold golden-mean tiling with four tiles2022
- Author(s)
  A. Koga
- Organizer
  10th International Conference on Aperiodic Crystals (APERIODIC2022)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] Spin current rectifier based on the Kitaev spin model2022
- Author(s)
  O. Kanehira, H. Tsuchiura, and A. Koga
- Organizer
  2022 Joint MMM-INTERMAG conference
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21H01025
[Presentation] Majorana-mediated spin transport in the S=1/2 Kitaev model at finite temperatures2022
- Author(s)
  A. Koga
- Organizer
  International Conference on Strongly Correlated Electron Systems (SCES2022)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-22K03525
[Presentation] フィボナッチ格子上の強束縛模型における光学応答の理論研究2022
- Author(s)
  飯島弘貴, 村上雄太, 古賀昌久
- Organizer
  2022年春季大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] Majorana-mediated spin transport in the Kitaev model at finite temperatures2022
- Author(s)
  A. Koga
- Organizer
  International Workshop on spintronics 2022 "Spin Argentina"
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] キタエフスピン模型におけるマヨラナ粒子の実空間ダイナミクスの解析2022
- Author(s)
  兼平修, 土浦宏紀, 古賀昌久
- Organizer
  2022年春季大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] キタエフスピン模型におけるスピン輸送とその制御2021
- Author(s)
  兼平修, 土浦宏紀, 古賀昌久
- Organizer
  2021年秋季大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] キタエフ量子スピン液体におけるスピン輸送のフラックス散乱2021
- Author(s)
  那須譲治, 村上雄太, 古賀昌久
- Organizer
  2021年秋季大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] フィボナッチ格子上の強束縛模型における光学応答2021
- Author(s)
  飯島弘貴, 村上雄太, 古賀昌久
- Organizer
  日本物理学会2021年春季大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] キタエフ模型におけるマヨラナ相関2021
- Author(s)
  古賀昌久, 村上雄太, 那須譲治
- Organizer
  日本物理学会2021年春季大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] 準結晶励起子絶縁体における光誘起ダイナミクスII2021
- Author(s)
  稲吉健, 村上雄太, 古賀昌久
- Organizer
  日本物理学会2021年春季大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] 一次元Mott絶縁体からの高次高調波発生：ダブロン・ホロンに対する3ステップ模型とスピンダイナミクスの効果2021
- Author(s)
  村上雄太, 高吉慎太郎, 古賀昌久, Philipp Werner
- Organizer
  日本物理学会2021年春季大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] 非一様磁場中キタエフ模型の磁化の空間依存性22020
- Author(s)
  皆川哲哉, 村上雄太, 古賀昌久, 那須譲治
- Organizer
  日本物理学会第75回年次大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] 準結晶励起子絶縁体における光誘起ダイナミクス2020
- Author(s)
  稲吉健, 村上雄太, 古賀昌久
- Organizer
  日本物理学会2020年秋季大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] 準周期構造をもつ二重交換模型の磁性2020
- Author(s)
  竹内勇輝, 那須譲治, 古賀昌久
- Organizer
  日本物理学会第75回年次大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] 二軌道Penrose-Hubbardモデルにおける励起子凝縮2020
- Author(s)
  稲吉健, 村上雄太, 古賀昌久
- Organizer
  日本物理学会第75回年次大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] Fibonacci格子強束縛模型における非線形光学応答2020
- Author(s)
  飯島弘貴, 村上雄太, 古賀昌久
- Organizer
  日本物理学会2020年秋季大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] 制限ボルツマンマシンによる2層Kitaev模型の基底状態の解析2020
- Author(s)
  清原越生, 古賀昌久
- Organizer
  日本物理学会2020年秋季大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] 励起子絶縁相における集団励起モードへの電子格子相互作用の影響と観測可能性2020
- Author(s)
  村上雄太, Denis Golez, Paolo Andrich, Hope Bretscher, 金子竜也, 古賀昌久, Andy Millis, Philipp Werner
- Organizer
  日本物理学会第75回年次大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] キタエフ模型におけるスピン伝導2020
- Author(s)
  皆川哲哉, 村上雄太, 古賀昌久, 那須譲治
- Organizer
  日本物理学会2020年秋季大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] 非一様磁場中S=1キタエフ模型における動的スピン相関2020
- Author(s)
  古賀昌久, 皆川哲哉, 村上雄太, 那須譲治
- Organizer
  日本物理学会第75回年次大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] キタエフ模型のスピン輸送特性に対する異方性の効果2020
- Author(s)
  田口滉一, 村上雄太, 古賀昌久
- Organizer
  日本物理学会2020年秋季大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] 二重交換模型を用いた希土類磁石の解析2020
- Author(s)
  砂川滉太, 村上雄太, 古賀昌久, 吉岡匠哉, 土浦宏紀
- Organizer
  日本物理学会2020年秋季大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] 単軌道ハバード模型の強磁性相に対する状態密度の効果についての解析2019
- Author(s)
  鴨川友輔, 那須譲治, 古賀昌久
- Organizer
  日本物理学会第74回年次大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] 混合スピンキタエフ模型における熱力学特性2019
- Author(s)
  古賀昌久, 那須譲治
- Organizer
  2019年秋季大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] スピンSキタエフ模型の異方的極限における低エネルギー有効模型2019
- Author(s)
  皆川哲哉, 那須譲治, 古賀昌久
- Organizer
  日本物理学会第74回年次大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] スピンSキタエフ模型の熱力学量に対する異方性の効果2019
- Author(s)
  J. Oitmaa, 古賀昌久, R. R. P. Singh
- Organizer
  日本物理学会第74回年次大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] Magnetic order in the strongly correlated electron systems on the Penrose lattice2019
- Author(s)
  A. Koga
- Organizer
  Interdisciplinary Symposium for Quasicrystals and Strongly Correlated Electron Systems
- Invited
- Data Source
  KAKENHI-PLANNED-19H05821
[Presentation] 非一様磁場中キタエフ模型の磁化の空間依存性2019
- Author(s)
  皆川哲哉, 那須譲治, 村上雄太, 古賀昌久
- Organizer
  2019年秋季大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] ペンローズハバード模型における反強磁性秩序2018
- Author(s)
  古賀昌久, 常次宏一
- Organizer
  第73回年次大会
- Data Source
  KAKENHI-PUBLICLY-16H01066
[Presentation] 2層キタエフ模型における層間相互作用の効果2018
- Author(s)
  富重博之, 那須譲治, 古賀昌久
- Organizer
  第73回年次大会
- Data Source
  KAKENHI-PUBLICLY-16H01066
[Presentation] ペンローズ格子上の電子状態2018
- Author(s)
  古賀昌久
- Organizer
  第73回年次大会
- Invited
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] 2層キタエフ模型における層間相互作用の効果2018
- Author(s)
  富重博之, 那須譲治, 古賀昌久
- Organizer
  第73回年次大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] 反強磁性Hund結合をもつ３軌道Hubbard模型において現れる特異な量子相の安定性2018
- Author(s)
  石垣耕祐, 那須譲治, 古賀昌久, 星野晋太郎, Philipp Werner
- Organizer
  第73回年次大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] スピンS=1キタエフ模型の基底状態と熱力学特性2018
- Author(s)
  古賀昌久, 富重博之, 那須譲治
- Organizer
  日本物理学会2018年秋季大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] 希土類磁石の磁性に対する伝導電子の効果2018
- Author(s)
  田口陽二郎, 那須譲治, 古賀昌久, 吉岡匠哉, 土浦宏紀
- Organizer
  第73回年次大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] ペンローズ格子上の電子状態2018
- Author(s)
  古賀昌久
- Organizer
  第73回年次大会
- Invited
- Data Source
  KAKENHI-PUBLICLY-16H01066
[Presentation] 2層キタエフ模型におけるダイマー相－スピン液体相間の相転移2018
- Author(s)
  富重博之, 那須譲治, 古賀昌久
- Organizer
  日本物理学会2018年秋季大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] 希土類磁石の磁性に対する伝導電子の効果2018
- Author(s)
  田口陽二郎, 那須譲治, 古賀昌久, 吉岡匠哉, 土浦宏紀
- Organizer
  第73回年次大会
- Data Source
  KAKENHI-PUBLICLY-16H01066
[Presentation] 反強磁性Hund結合をもつ３軌道Hubbard模型において現れる特異な量子相の安定性2018
- Author(s)
  石垣耕祐, 那須譲治, 古賀昌久, 星野晋太郎, Philipp Werner
- Organizer
  第73回年次大会
- Data Source
  KAKENHI-PUBLICLY-16H01066
[Presentation] ペンローズハバード模型における反強磁性秩序2018
- Author(s)
  古賀昌久, 常次宏一
- Organizer
  第73回年次大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] 単軌道ハバード模型における強磁性への不安定性2018
- Author(s)
  鴨川友輔, 那須譲治, 古賀昌久
- Organizer
  日本物理学会2018年秋季大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] ペアホッピング由来の電荷近藤効果に対する軌道内斥力の影響2017
- Author(s)
  新崎龍, 那須譲治, 古賀昌久
- Organizer
  日本物理学会第72回年次大会
- Place of Presentation
  大阪大学
- Data Source
  KAKENHI-PUBLICLY-16H01066
[Presentation] ペンローズ格子上の超伝導の理論研究2017
- Author(s)
  酒井志朗, 竹森那由多, 古賀昌久, 有田亮太郎
- Organizer
  日本物理学会第72回年次大会
- Place of Presentation
  大阪大学
- Data Source
  KAKENHI-PUBLICLY-16H01066
[Presentation] 2軌道ハバード模型における励起子相と軌道秩序相の競合II2017
- Author(s)
  石垣耕祐, 那須譲治, 古賀昌久
- Organizer
  2017年秋季大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] 2軌道ハバード模型における励起子相と軌道秩序相の競合II2017
- Author(s)
  石垣耕祐, 那須譲治, 古賀昌久
- Organizer
  2017年秋季大会
- Data Source
  KAKENHI-PUBLICLY-16H01066
[Presentation] 2軌道ハバード模型における励起子相と軌道秩序相の競合2017
- Author(s)
  石垣耕祐, 那須譲治, 古賀昌久
- Organizer
  日本物理学会第72回年次大会
- Place of Presentation
  大阪大学
- Data Source
  KAKENHI-PUBLICLY-16H01066
[Presentation] Nd-Fe-B系の磁性に対する伝導電子の効果2017
- Author(s)
  田口陽二郎, 那須譲治, 古賀昌久, 吉岡匠哉, 土浦宏紀
- Organizer
  日本物理学会第72回年次大会
- Place of Presentation
  大阪大学
- Data Source
  KAKENHI-PROJECT-25800193
[Presentation] 2軌道ハバード模型における励起子相と軌道秩序相の競合2017
- Author(s)
  石垣耕祐, 那須譲治, 古賀昌久
- Organizer
  日本物理学会第72回年次大会
- Place of Presentation
  大阪大学
- Data Source
  KAKENHI-PROJECT-25800193
[Presentation] ハニカム格子上多軌道模型におけるスピン軌道相互作用の効果2017
- Author(s)
  古賀昌久, 中内子竜, 那須譲治
- Organizer
  2017年秋季大会
- Data Source
  KAKENHI-PUBLICLY-16H01066
[Presentation] Nd-Fe-B系の磁性に対する伝導電子の効果2017
- Author(s)
  田口陽二郎, 那須譲治, 古賀昌久, 吉岡匠哉, 土浦宏紀
- Organizer
  日本物理学会第72回年次大会
- Place of Presentation
  大阪大学
- Data Source
  KAKENHI-PUBLICLY-16H01066
[Presentation] ペンローズ格子上の超伝導の理論研究2017
- Author(s)
  酒井志朗, 竹森那由多, 古賀昌久, 有田亮太郎
- Organizer
  日本物理学会第72回年次大会
- Place of Presentation
  大阪大学
- Data Source
  KAKENHI-PROJECT-25800193
[Presentation] ハニカム格子上多軌道模型におけるスピン軌道相互作用の効果2017
- Author(s)
  古賀昌久, 中内子竜, 那須譲治
- Organizer
  2017年秋季大会
- Data Source
  KAKENHI-PROJECT-17K05536
[Presentation] ペアホッピング由来の電荷近藤効果に対する軌道内斥力の影響2017
- Author(s)
  新崎龍, 那須譲治, 古賀昌久
- Organizer
  日本物理学会第72回年次大会
- Place of Presentation
  大阪大学
- Data Source
  KAKENHI-PROJECT-25800193
[Presentation] SU(N)ハバード模型における秩序相の解析2016
- Author(s)
  古賀昌久, 梁取大将
- Organizer
  日本物理学会2016年秋季大会
- Place of Presentation
  金沢大学
- Data Source
  KAKENHI-PROJECT-25800193
[Presentation] 動的平均場理論によるペアホッピング由来の電荷近藤効果の解析2016
- Author(s)
  新崎龍, 那須譲治, 古賀昌久
- Organizer
  日本物理学会2016年秋季大会
- Place of Presentation
  金沢大学
- Data Source
  KAKENHI-PROJECT-25800193
[Presentation] 準周期ハバード模型におけるサイト間電子相関効果2016
- Author(s)
  竹森那由多, 古賀昌久, Hartmut Hafermann
- Organizer
  日本物理学会第71回年次大会
- Place of Presentation
  東北学院大
- Year and Date
  2016-03-22
- Data Source
  KAKENHI-PROJECT-25800193
[Presentation] スピン軌道相互作用の強いt2g電子系に対するクラスター平均場による解析2016
- Author(s)
  中内子竜, 那須譲治, 古賀昌久
- Organizer
  日本物理学会第71回年次大会
- Place of Presentation
  東北学院大
- Year and Date
  2016-03-21
- Data Source
  KAKENHI-PROJECT-25800193
[Presentation] 動的平均場理論によるペアホッピング由来の電荷近藤効果の解析2016
- Author(s)
  新崎龍, 那須譲治, 古賀昌久
- Organizer
  日本物理学会2016年秋季大会
- Place of Presentation
  金沢大学
- Data Source
  KAKENHI-PUBLICLY-16H01066
[Presentation] スピン1/2 Falicov-Kimball模型における準周期性と価数揺らぎ2016
- Author(s)
  那須譲治, 新崎龍, 古賀昌久
- Organizer
  日本物理学会第71回年次大会
- Place of Presentation
  東北学院大
- Year and Date
  2016-03-21
- Data Source
  KAKENHI-PROJECT-25800193
[Presentation] SU(N)ハバード模型における秩序相の解析2016
- Author(s)
  古賀昌久, 梁取大将
- Organizer
  日本物理学会2016年秋季大会
- Place of Presentation
  金沢大学
- Data Source
  KAKENHI-PUBLICLY-16H01066
[Presentation] 動的平均場理論によるBiNiO3有効模型の解析2016
- Author(s)
  小嶋祥也, 那須譲治, 古賀昌久
- Organizer
  日本物理学会第71回年次大会
- Place of Presentation
  東北学院大
- Year and Date
  2016-03-19
- Data Source
  KAKENHI-PROJECT-25800193
[Presentation] 光格子中の多成分フェルミ粒子系における秩序相の解析2016
- Author(s)
  梁取大将, 古賀昌久
- Organizer
  日本物理学会第71回年次大会
- Place of Presentation
  東北学院大
- Year and Date
  2016-03-20
- Data Source
  KAKENHI-PROJECT-25800193
[Presentation] 2次元ペンローズ格子上の拡張周期アンダーソン模型における価数揺動現象2016
- Author(s)
  新崎龍, 那須譲治, 古賀昌久
- Organizer
  日本物理学会第71回年次大会
- Place of Presentation
  東北学院大
- Year and Date
  2016-03-21
- Data Source
  KAKENHI-PROJECT-25800193
[Presentation] 2次元ペンローズ格子におけるサイト間相関効果2015
- Author(s)
  竹森那由多，古賀昌久，Hartmut Hafermann
- Organizer
  日本物理学会第70回年次大会
- Place of Presentation
  早稲田大学
- Year and Date
  2015-03-24
- Data Source
  KAKENHI-PROJECT-25800193
[Presentation] 動的平均場理論を用いた有限温度における価数転移の解析2015
- Author(s)
  新崎龍, 那須譲治, 古賀昌久
- Organizer
  日本物理学会2015年秋季大会
- Place of Presentation
  関西大
- Year and Date
  2015-09-18
- Data Source
  KAKENHI-PROJECT-25800193
[Presentation] 3成分フェルミ粒子系における秩序相の解析2015
- Author(s)
  梁取大将，古賀昌久
- Organizer
  日本物理学会第70回年次大会
- Place of Presentation
  早稲田大学
- Year and Date
  2015-03-21
- Data Source
  KAKENHI-PROJECT-25800193
[Presentation] 二次元ペンローズハバード模型における磁気的性質2015
- Author(s)
  古賀昌久，常次宏一
- Organizer
  日本物理学会第70回年次大会
- Place of Presentation
  早稲田大学
- Year and Date
  2015-03-24
- Data Source
  KAKENHI-PROJECT-25800193
[Presentation] 擬ギャップ構造を持つリードに繋がれた量子ドットの輸送特性2015
- Author(s)
  原文平，古賀昌久
- Organizer
  日本物理学会第70回年次大会
- Place of Presentation
  早稲田大学
- Year and Date
  2015-03-22
- Data Source
  KAKENHI-PROJECT-25800193
[Presentation] 2次元準周期系における拡張周期アンダーソン模型の解析II2015
- Author(s)
  竹村信一，竹森那由多，古賀昌久
- Organizer
  日本物理学会第70回年次大会
- Place of Presentation
  早稲田大学
- Year and Date
  2015-03-24
- Data Source
  KAKENHI-PROJECT-25800193
[Presentation] 非一様系におけるサイト間相関を扱う計算手法開発と準周期系への適用2015
- Author(s)
  竹森那由多, 古賀昌久, Hartmut Hafermann
- Organizer
  日本物理学会2015年秋季大会
- Place of Presentation
  関西大
- Year and Date
  2015-09-17
- Data Source
  KAKENHI-PROJECT-25800193
[Presentation] 準周期系における拡張周期アンダーソン模型の解析2014
- Author(s)
  竹村信一，竹森那由多，古賀昌久
- Organizer
  日本物理学会2013年秋季大会
- Place of Presentation
  中部大学
- Year and Date
  2014-09-08
- Data Source
  KAKENHI-PROJECT-25800193
[Presentation] 準周期系を扱う計算手法開発2014
- Author(s)
  竹森那由多，古賀昌久
- Organizer
  日本物理学会2013年秋季大会
- Place of Presentation
  中部大学
- Year and Date
  2014-09-08
- Data Source
  KAKENHI-PROJECT-25800193
[Presentation] 準周期性のある系におけるモット転移2014
- Author(s)
  竹森那由多，古賀昌久
- Organizer
  日本物理学会第69回年次大会
- Place of Presentation
  東海大学
- Data Source
  KAKENHI-PROJECT-25800193
[Presentation] 準周期性のある周期アンダーソン模型の解析2014
- Author(s)
  竹村信一，竹森那由多，古賀昌久
- Organizer
  日本物理学会第69回年次大会
- Place of Presentation
  東海大学
- Data Source
  KAKENHI-PROJECT-25800193
[Presentation] 縮退ハバード模型におけるs波超伝導状態2014
- Author(s)
  古賀昌久，P. Werner
- Organizer
  日本物理学会2013年秋季大会
- Place of Presentation
  中部大学
- Year and Date
  2014-09-09
- Data Source
  KAKENHI-PROJECT-25800193
[Presentation] 光格子三成分フェルミ粒子系における超流動の安定性 II2014
- Author(s)
  岡南佑紀，竹森那由多，古賀昌久
- Organizer
  日本物理学会第69回年次大会
- Place of Presentation
  東海大学
- Data Source
  KAKENHI-PROJECT-25800193
[Presentation] クラスター平均場法による直交ダイマー系SrCu2(BO3)2の磁化過程の解析2013
- Author(s)
  鈴木亮太，古賀昌久
- Organizer
  日本物理学会2013年秋季大会
- Place of Presentation
  徳島大学
- Data Source
  KAKENHI-PROJECT-25800193
[Presentation] 光格子三成分フェルミ粒子系における超流動の安定性：量子モンテカルロ法を用いた解析2013
- Author(s)
  岡南佑紀，竹森那由多，古賀昌久
- Organizer
  日本物理学会2013年秋季大会
- Place of Presentation
  徳島大学
- Data Source
  KAKENHI-PROJECT-25800193
[Presentation] 二次元ペンローズ格子における局所電子相関2013
- Author(s)
  竹森那由多，古賀昌久
- Organizer
  日本物理学会2013年秋季大会
- Place of Presentation
  徳島大学
- Data Source
  KAKENHI-PROJECT-25800193
[Presentation] 二次元ペンローズ格子ハバード模型における磁気的性質2013
- Author(s)
  古賀昌久，竹森那由多
- Organizer
  日本物理学会2013年秋季大会
- Place of Presentation
  徳島大学
- Data Source
  KAKENHI-PROJECT-25800193
[Presentation] フェルミ粒子系光格子系における擬ギャップ的振る舞い2011
- Author(s)
  古賀昌久
- Organizer
  日本物理学会
- Place of Presentation
  富山大学
- Year and Date
  2011-09-22
- Data Source
  KAKENHI-PROJECT-20740194
[Presentation] フェルミ原子光格子系におけるトラップ中での超流動状態のノイズ相関2010
- Author(s)
  藤原祐介、古賀昌久、川上則雄
- Organizer
  第65回年次大会 (21pPSB-22)
- Place of Presentation
  岡山大学
- Year and Date
  2010-03-21
- Data Source
  KAKENHI-PROJECT-20740194
[Presentation] 光格子フェルミ粒子系における粒子数インバランスの効果2010
- Author(s)
  古賀昌久、P.Werne
- Organizer
  第65回年次大会 (20aTB-13)
- Place of Presentation
  岡山大学
- Year and Date
  2010-03-20
- Data Source
  KAKENHI-PROJECT-20740194
[Presentation] 光格子フェルミ粒子系における粒子数インバランスの効果2010
- Author(s)
  古賀昌久
- Organizer
  日本物理学会
- Place of Presentation
  岡山大学
- Year and Date
  2010-03-20
- Data Source
  KAKENHI-PROJECT-20740194
[Presentation] 光格子フェルミ粒子系における超流動状態の安定性2010
- Author(s)
  古賀昌久
- Organizer
  日本物理学会
- Place of Presentation
  大阪府立大学
- Year and Date
  2010-09-24
- Data Source
  KAKENHI-PROJECT-20740194
[Presentation] 光格子フェルミ粒子系における超流動状態の安定性2010
- Author(s)
  古賀昌久、P.Werner
- Organizer
  2010年秋季大会 (24aRP-1)
- Place of Presentation
  大阪府大学
- Year and Date
  2010-09-24
- Data Source
  KAKENHI-PROJECT-20740194
[Presentation] 二次元フェルミ粒子光格子系における超固体状態の解析2009
- Author(s)
  藤原祐介、古賀昌久、川上則雄
- Organizer
  2009年秋季大会 (25pZE-3)
- Place of Presentation
  熊本大学
- Year and Date
  2009-09-25
- Data Source
  KAKENHI-PROJECT-20740194
[Presentation] 軌道自由度を有するHubbard模型における磁気・軌道秩序に対する軌道間混成の影響2009
- Author(s)
  小山洋太、古賀昌久、川上則雄、Philipp Werner
- Organizer
  日本物理学会第64回年次大会(27aVL-10)
- Place of Presentation
  立教大学
- Year and Date
  2009-03-27
- Data Source
  KAKENHI-PROJECT-20740194
[Presentation] トラップされた光格子フェルミ粒子系における超固体状態2008
- Author(s)
  古賀昌久
- Organizer
  日本物理学会
- Place of Presentation
  岩手大学
- Year and Date
  2008-09-22
- Data Source
  KAKENHI-PROJECT-20740194
[Presentation] トラップされた光格子フェルミ粒子系における超流動状態と反強磁性状態2008
- Author(s)
  古賀昌久
- Organizer
  日本物理学会第63回年次大会
- Place of Presentation
  近畿大学
- Year and Date
  2008-03-23
- Data Source
  KAKENHI-PROJECT-17740226
[Presentation] 拡張周期アンダーソン模型における磁気的性質2007
- Author(s)
  古賀昌久
- Organizer
  日本物理学会第62回年次大会
- Place of Presentation
  北海道大学
- Year and Date
  2007-09-23
- Data Source
  KAKENHI-PROJECT-17740226

1. Tsuchiura Hiroki (30374961)

# of Collaborated Projects: 2 results

# of Collaborated Products: 2 results
2. KAWAKAMI Norio (10169683)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
3. YOSHIOKA Takuya (00724387)

# of Collaborated Projects: 1 results

# of Collaborated Products: 1 results
4. Deguchi Kazuhiko (40397584)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
5. 中村真 (00360610)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
6. 枝川圭一 (20223654)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
7. 橋爪洋一郎 (50711610)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
8. 杉本貴則 (70735662)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
9. 高際良樹 (90549594)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
10. 青野友祐

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results
11. 村上雄太

# of Collaborated Projects: 0 results

# of Collaborated Products: 3 results
12. 那須譲治

# of Collaborated Projects: 0 results

# of Collaborated Products: 6 results
13. 山本和樹

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results
14. 内田健人

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results

Koga Akihisa 古賀 昌久

KOGA Akihisa 古賀 昌久

Research Projects

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不規則ハイパーユニフォーム構造の分類に向けた機械学習Principal Investigator

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マヨラナ粒子を活用したスピン流の制御機構の探求Principal Investigator

Principal Investigator

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Theoretical proposal for novel devices based on the Kitaev model

Principal Investigator

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Physics of hypermaterials and the search for hidden orders

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Electronic Theory for High-Performance Rare Earth Permanent Magnets

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Unconventional strong coupling superconductivity in the quasiperiodic systems: nonperturbative approachPrincipal Investigator

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準周期構造を持つ重い電子系における価数転移Principal Investigator

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Unperturbed approach to strongly correlated superconductivity: inhomogenity and frequency dependencePrincipal Investigator

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Strong correlations in the fermionic system with confining potentialPrincipal Investigator

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軌道依存型モット転移近傍における強相関効果Principal Investigator

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Electron Correlation Effects in Frustrated Itinerant Electron Systems

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[Journal Article] Theory of non-Hermitian fermionic superfluidity on a honeycomb lattice: Interplay between exceptional manifolds and Van Hove singularity2024

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[Journal Article] Ferromagnetically ordered states in the Hubbard model on the H00?hexagonal golden-mean tiling2024

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Koga Akihisa 古賀昌久

KOGA Akihisa 古賀昌久