Ishikawa Hajime 石川孟

Researcher Number	70843192
Other IDs
Affiliation (Current)	2025: 東京理科大学, 理学部第一部応用化学科, 講師
Affiliation (based on the past Project Information) *help	2022 – 2025: 東京大学, 物性研究所, 助教 2019 – 2020: 東京大学, 物性研究所, 助教
Review Section/Research Field	Principal Investigator Basic Section 13030:Magnetism, superconductivity and strongly correlated systems-related / Transformative Research Areas, Section (II) / Science and Engineering / 0202:Condensed matter physics, plasma science, nuclear engineering, earth resources engineering, energy engineering, and related fields
Keywords	Principal Investigator 新物質開発 / 結晶育成 / 単結晶育成 / パルス強磁場 / 磁性 / ハニカム格子磁性体 / カイラル物質 / 金属有機構造体 / 有機無機ハイブリッド物質 / スピンネマティック … More / 量子磁性体 / 歪み測定 / 量子スピン液体 / 量子スピン液晶 / 磁歪測定 / 磁化測定 / スピン液晶 / 磁気輸送測定 / バンド構造 / 磁気抵抗測定 / カゴメ格子 / ハニカム金属 / カゴメ金属 / 超伝導 / ハニカム格子金属 / カゴメ格子金属 / 物質探索 / 超強磁場 / スピン軌道相互作用 / 量子物質 / 強磁場物性 / 5d電子物性 Less

アニオン遷移金属種が示す電子物性の開拓Principal Investigator
- Principal Investigator
  
  石川孟
- Project Period (FY)
  2025 – 2027
- Research Category
  
  Grant-in-Aid for Early-Career Scientists
- Review Section
  
  Basic Section 13030:Magnetism, superconductivity and strongly correlated systems-related
- Research Institution
  The University of Tokyo
Exploratio of the extended chiral honeycomb hybrid materialsPrincipal Investigator
- Principal Investigator
  
  石川孟
- Project Period (FY)
  2024 – 2025
- Research Category
  
  Grant-in-Aid for Transformative Research Areas (A)
- Review Section
  
  Transformative Research Areas, Section (II)
- Research Institution
  The University of Tokyo
Development and investigation of kagome metal materials with unconventional magnetotransport propertiesPrincipal Investigator
- Principal Investigator
  
  Ishikawa Hajime
- Project Period (FY)
  2022 – 2023
- Research Category
  
  Grant-in-Aid for Early-Career Scientists
- Review Section
  
  Basic Section 13030:Magnetism, superconductivity and strongly correlated systems-related
- Research Institution
  The University of Tokyo
Investigation of the spin nematic state via magnetization and magnetostriction measurements in strong pulsed magnetic fieldPrincipal Investigator
- Principal Investigator
  
  石川孟
- Project Period (FY)
  2022 – 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
  The University of Tokyo
High magnetic field investigations of the magnetic properties and moleclar orbitals in the compounds with tantalum 5d electronsPrincipal Investigator
- Principal Investigator
  
  Ishikawa Hajime
- Project Period (FY)
  2019 – 2020
- Research Category
  
  Grant-in-Aid for Research Activity Start-up
- Review Section
  
  0202:Condensed matter physics, plasma science, nuclear engineering, earth resources engineering, energy engineering, and related fields
- Research Institution
  The University of Tokyo

All 2024 2023 2022 2021 2020 2019

All Journal Article Presentation

[Journal Article] Jeff = 1/2 Hyperoctagon Lattice in Cobalt Oxalate Metal-Organic Framework2024
- Author(s)
  Ishikawa Hajime、Imajo Shusaku、Takeda Hikaru、Kakegawa Masafumi、Yamashita Minoru、Yamaura Jun-ichi、Kindo Koichi
- Journal Title
  
  Physical Review Letters
  
  Volume: 132 Issue: 15 Pages: 156702-156702
- DOI
  10.1103/physrevlett.132.156702
- Peer Reviewed
- Data Source
  KAKENHI-PUBLICLY-22H04466, KAKENHI-PUBLICLY-22H04467, KAKENHI-PROJECT-23K25813
[Journal Article] Magnetic anisotropy of CeCoSi under high magnetic field2024
- Author(s)
  Tomoki Kanda, Hajime Ishikawa, Shusaku Imajo, Koichi Kindo, Hiroshi Tanida , Yoshimitsu Kohama
- Journal Title
  
  Physical Review B
  
  Volume: -
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22K13996
[Journal Article] Magnetic field induced valence change in Eu(Co1-xNix)2P2 up to 60 T2023
- Author(s)
  Nakamura Raito、Ishita Azumi、Nakamura Jin、Ohta Hiroto、Haraguchi Yuya、Katori Hiroko Aruga、Ishikawa Hajime、Matsuo Akira、Kindo Koichi、Nohara Minoru、Ikeda Akihiko
- Journal Title
  
  Physical Review B
  
  Volume: 107 Issue: 23 Pages: 235110-235110
- DOI
  10.1103/physrevb.107.235110
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-22K14002, KAKENHI-PUBLICLY-22H04467, KAKENHI-PUBLICLY-23H04630, KAKENHI-PLANNED-23H04861, KAKENHI-PROJECT-23K25818
[Journal Article] Breathing pyrochlore magnet CuGaCr4S8: Magnetic, thermodynamic, and dielectric properties2023
- Author(s)
  M. Gen, H. Ishikawa, A. Miyake, T. Yajima, H. O. Jeschke, H. Sagayama, A. Ikeda, Y. H. Matsuda, K. Kindo, M. Tokunaga, Y. Kohama, T. Kurumaji, Y. Tokunaga, T. Arima
- Journal Title
  
  Physical Review Materials
  
  Volume: 7 Issue: 10 Pages: 104404-104404
- DOI
  10.1103/physrevmaterials.7.104404
- Peer Reviewed
- Data Source
  KAKENHI-PLANNED-19H05826, KAKENHI-PUBLICLY-22H04467, KAKENHI-PLANNED-23H04861, KAKENHI-PROJECT-23K25818
[Journal Article] Fermi surface and light quasi particles in hourglass nodal chain metal β-ReO22023
- Author(s)
  Daigorou Hirai, Takahito Anbai, Takako Konoike, Shinya Uji, Yuya Hattori, Taichi Terashima, Hajime Ishikawa, Koichi Kindo, Naoyuki Katayama, Tamio Oguchi, Zenji Hiroi
- Journal Title
  
  Journal of Physics: Condensed Matter
  
  Volume: 35 Issue: 40 Pages: 405503-405503
- DOI
  10.1088/1361-648x/ace22c
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22K13996, KAKENHI-PUBLICLY-22H04462, KAKENHI-PROJECT-23K22444, KAKENHI-PROJECT-23K22449
[Journal Article] Structural and Electronic Properties of a Triangular Lattice Magnet NaPrTe2 Compared with NaNdTe2 and NaTbTe22023
- Author(s)
  K. Eto, Y. Okamoto, N. Katayama, H. Ishikawa, K. Kindo, and K. Takenaka
- Journal Title
  
  J. Phys. Soc. Jpn.
  
  Volume: 92 Issue: 9 Pages: 094707-094707
- DOI
  10.7566/jpsj.92.094707
- Peer Reviewed
- Data Source
  KAKENHI-PLANNED-19H05823, KAKENHI-PUBLICLY-22H04467, KAKENHI-PROJECT-23K26524
[Journal Article] Superconductivity at 12 K in La2IOs2: A 5d metal with osmium honeycomb layer2023
- Author(s)
  Hajime Ishikawa, Takeshi Yajima, Daisuke Nishio-Hamane, Shusaku Imajo, Koichi Kindo, Mitsuaki Kawamura
- Journal Title
  
  Physical Review Materials
  
  Volume: 7 Issue: 5 Pages: 054804-054804
- DOI
  10.1103/physrevmaterials.7.054804
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22K13996, KAKENHI-PUBLICLY-22H04466, KAKENHI-PUBLICLY-22H04467
[Journal Article] Signatures of a magnetic superstructure phase induced by ultrahigh magnetic fields in a breathing pyrochlore antiferromagnet2023
- Author(s)
  Gen Masaki, Ikeda Akihiko, Aoyama Kazushi, Jeschke Harald O., Ishii Yuto, Ishikawa Hajime, Yajima Takeshi, Okamoto Yoshihiko, Zhou Xuguang, Nakamura Daisuke, Takeyama Shojiro, Kindo Koichi, Matsuda Yasuhiro H., Kohama Yoshimitsu
- Journal Title
  
  Proceedings of the National Academy of Sciences
  
  Volume: 120 Issue: 33
- DOI
  10.1073/pnas.2302756120
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-23K17666, KAKENHI-PROJECT-23KK0052, KAKENHI-PUBLICLY-22H04467, KAKENHI-PLANNED-23H04861, KAKENHI-PROJECT-22H00104, KAKENHI-PROJECT-23K25818
[Journal Article] Complex magnetic phase diagram with a small phase pocket in a three-dimensional frustrated magnet CuInCr4S82022
- Author(s)
  Gen M.、Ishikawa H.、Ikeda A.、Miyake A.、Yang Z.、Okamoto Y.、Mori M.、Takenaka K.、Sagayama H.、Kurumaji T.、Tokunaga Y.、Arima T.、Tokunaga M.、Kindo K.、Matsuda Y. H.、Kohama Y.
- Journal Title
  
  Physical Review Research
  
  Volume: 4 Issue: 3 Pages: 0331481-13
- DOI
  10.1103/physrevresearch.4.033148
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-22H00104, KAKENHI-PROJECT-19H01832, KAKENHI-PLANNED-19H05823, KAKENHI-PUBLICLY-22H04467
[Journal Article] SmI3: 4f5 honeycomb magnet with spin-orbital entangled Γ7 Kramers doublet2022
- Author(s)
  H. Ishikawa, R. Kurihara, T. Yajima, D. Nishio-Hamane, Y. Shimizu, T. Sakakibara, A. Matsuo, K. Kindo
- Journal Title
  
  Physical Review Materials
  
  Volume: 6 Issue: 6 Pages: 0644051-5
- DOI
  10.1103/physrevmaterials.6.064405
- Peer Reviewed
- Data Source
  KAKENHI-PUBLICLY-22H04467
[Journal Article] Ligand dependent magnetism of the Jeff = 3/2 Mott insulator Cs2MX6 (M = Ta, Nb, X = Br, Cl)2021
- Author(s)
  Hajime Ishikawa, Takeshi Yajima, Akira Matsuo, Koichi Kindo
- Journal Title
  
  Journal of Physics: Condensed Matter
  
  Volume: 33 Issue: 12 Pages: 1258021-6
- DOI
  10.1088/1361-648x/abd7b5
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19K23420
[Journal Article] Nonmagnetic ground states and a possible quadrupolar phase in 4d and 5d lacunar spinel selenides GaM4Se8 (M = Nb,Ta)2020
- Author(s)
  Hajime Ishikawa, Takeshi Yajima, Akira Matsuo, Yoshihiko Ihara, Koichi Kindo
- Journal Title
  
  Physical Review Letters
  
  Volume: -
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19K23420
[Journal Article] Kitaev Spin Liquid Candidate OsxCl3 Comprised of Honeycomb Nano-Domains2020
- Author(s)
  Kota Kataoka, Daigoro Hirai, Takeshi Yajima, Daisuke Nishio-Hamane, Rieko Ishii, Kwang-Yong Choi, Dirk Wulferding, Peter Lemmens, Shunichiro Kittaka, Toshiro Sakakibara, Hajime Ishikawa, Akira Matsuo, Koichi Kindo, and Zenji Hiroi
- Journal Title
  
  Journal of the Physical Society of Japan
  
  Volume: 89 Issue: 11 Pages: 1147091-9
- DOI
  10.7566/jpsj.89.114709
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PLANNED-16H06441, KAKENHI-PROJECT-18H01161, KAKENHI-PROJECT-18H01164, KAKENHI-PROJECT-19K23420, KAKENHI-PUBLICLY-19H04688, KAKENHI-PROJECT-20H01858
[Journal Article] Nonmagnetic Ground States and a Possible Quadrupolar Phase in 4d and 5d Lacunar Spinel Selenides GaM4Se8 (M=Nb, Ta)2020
- Author(s)
  Ishikawa Hajime、Yajima Takeshi、Matsuo Akira、Ihara Yoshihiko、Kindo Koichi
- Journal Title
  
  Physical Review Letters
  
  Volume: 124 Issue: 22 Pages: 2272021-6
- DOI
  10.1103/physrevlett.124.227202
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18H01163, KAKENHI-PROJECT-19H01832, KAKENHI-PROJECT-19K23420
[Presentation] High magnetic field investigations of quantum spin liquid candidates based on the Cu-spin trimer2023
- Author(s)
  Hajime Ishikawa
- Organizer
  International Conference on Quantum Liquid Crystals 2023 (QLC2023)
- Int'l Joint Research
- Data Source
  KAKENHI-PUBLICLY-22H04467
[Presentation] 量子磁性体の配位子場制御による新奇相開拓2023
- Author(s)
  石川孟
- Organizer
  日本物理学会2023年春季大会
- Invited
- Data Source
  KAKENHI-PUBLICLY-22H04467
[Presentation] アニオン遷移金属ハニカム層を有するLa2IOs2における12 Kでの超伝導2023
- Author(s)
  石川孟
- Organizer
  第33回日本MRS年次大会
- Invited
- Data Source
  KAKENHI-PROJECT-22K13996
[Presentation] Search for the honeycomb quantum spin liquid materials without Ir, Ru, and Co2023
- Author(s)
  Hajime Ishikawa
- Organizer
  Quantum Magnetism and Topology 2023 (QMT 2023)
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PUBLICLY-22H04467
[Presentation] 5dアニオン遷移金属ハニカム格子をもつLa2IOs2におけるTc = 12 Kの超伝導2023
- Author(s)
  石川孟
- Organizer
  日本物理学会第78回年次大会
- Data Source
  KAKENHI-PROJECT-22K13996
[Presentation] Observation of Entire Magnetization Process of Star Lattice Quantum Spin Liquid Candidate in Pulsed High Magnetic Field2022
- Author(s)
  石川孟
- Organizer
  強磁場科学研究会/東北大学金属材料研究所国際ワークショップ
- Data Source
  KAKENHI-PUBLICLY-22H04467
[Presentation] 4f電子ハニカム系三ヨウ化サマリウムの磁性2022
- Author(s)
  石川孟, 栗原綾佑, 矢島健, 浜根大輔, 清水悠晴, 榊原俊郎, 松尾晶, 金道浩一
- Organizer
  日本物理学会 2022年秋季大会
- Data Source
  KAKENHI-PUBLICLY-22H04467
[Presentation] Observation of Entire Magnetization Process of Star Lattice Quantum Spin Liquid Candidate in Pulsed High Magnetic Field2022
- Author(s)
  Hajime Ishikawa
- Organizer
  Asia-Pacific Conference on Condensed Matter Physics 2022
- Int'l Joint Research
- Data Source
  KAKENHI-PUBLICLY-22H04467
[Presentation] SmI3 as an antiferromagnetic Kitaev material2022
- Author(s)
  Hajime Ishikawa
- Organizer
  International Conference on Highly Frustrated Magnetism 2022
- Int'l Joint Research
- Data Source
  KAKENHI-PUBLICLY-22H04467
[Presentation] 量子スピン液体候補物質としての三ヨウ化サマリウムの結晶育成と磁気的性質2022
- Author(s)
  石川孟
- Organizer
  第25回ヨウ素学会シンポジウム
- Data Source
  KAKENHI-PUBLICLY-22H04467
[Presentation] 4d1,5d1イオンを有する磁性体Cs2MX6(M=Nb,Ta,X=F,Cl,Br)におけるJeff=3/2状態の形成と磁性2021
- Author(s)
  石川孟, 矢島健, 松尾晶, 金道浩一
- Organizer
  日本物理学会第76回年次大会
- Data Source
  KAKENHI-PROJECT-19K23420
[Presentation] LacunarSpinel型4d,5d電子系GaM4Se8(M=Nb,Ta)の構造と磁性2020
- Author(s)
  石川孟, 矢島健, 松尾晶, 井原慶彦, 金道浩一
- Organizer
  日本物理学会2020年秋季大会
- Data Source
  KAKENHI-PROJECT-19K23420
[Presentation] Novel Magnetic Phases of Spin-orbit Coupled d1 Electron Systems Explored by Materials Development and Strong Magnetic Field2020
- Author(s)
  Hajime Ishikawa
- Organizer
  ARHMF2020 & KINKEN Materials Science School 2020 for Young Scientists
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K23420
[Presentation] 5d1タンタル塩化物の電子状態と多極子秩序2019
- Author(s)
  石川孟,、高山知弘、 Reinhard Kremer、Jurgen Nuss、Robert Dinnebier、北川健太郎、石井賢司、高木英典
- Organizer
  日本物理学会秋季大会
- Data Source
  KAKENHI-PROJECT-19K23420
[Presentation] スピン軌道相互作用の強いd1電子系の磁性2019
- Author(s)
  石川孟、松尾晶、金道浩一
- Organizer
  強磁場科学研究会
- Data Source
  KAKENHI-PROJECT-19K23420

1. OKAMOTO Yoshihiko

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results
2. 原口祐哉

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results
3. 有馬孝尚

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results
4. 今城周作

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results
5. 小濱芳允

# of Collaborated Projects: 0 results

# of Collaborated Products: 2 results
6. 井原慶彦

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results

Ishikawa Hajime 石川 孟

Research Projects

Research Products

Co-Researchers

アニオン遷移金属種が示す電子物性の開拓Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Exploratio of the extended chiral honeycomb hybrid materialsPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Development and investigation of kagome metal materials with unconventional magnetotransport propertiesPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Investigation of the spin nematic state via magnetization and magnetostriction measurements in strong pulsed magnetic fieldPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

High magnetic field investigations of the magnetic properties and moleclar orbitals in the compounds with tantalum 5d electronsPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

[Journal Article] Jeff = 1/2 Hyperoctagon Lattice in Cobalt Oxalate Metal-Organic Framework2024

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Magnetic anisotropy of CeCoSi under high magnetic field2024

Author(s)

Journal Title

Data Source

[Journal Article] Magnetic field induced valence change in Eu(Co1-xNix)2P2 up to 60 T2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Breathing pyrochlore magnet CuGaCr4S8: Magnetic, thermodynamic, and dielectric properties2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Fermi surface and light quasi particles in hourglass nodal chain metal β-ReO22023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Structural and Electronic Properties of a Triangular Lattice Magnet NaPrTe2 Compared with NaNdTe2 and NaTbTe22023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Superconductivity at 12 K in La2IOs2: A 5d metal with osmium honeycomb layer2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Signatures of a magnetic superstructure phase induced by ultrahigh magnetic fields in a breathing pyrochlore antiferromagnet2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Complex magnetic phase diagram with a small phase pocket in a three-dimensional frustrated magnet CuInCr4S82022

Author(s)

Journal Title

DOI

Data Source

[Journal Article] SmI3: 4f5 honeycomb magnet with spin-orbital entangled Γ7 Kramers doublet2022

Author(s)

Ishikawa Hajime 石川孟