Yokoyama Yuichi 横山優一

Researcher Number	20824163
Other IDs
Affiliation (Current)	2025: 公益財団法人高輝度光科学研究センター, 産学総合支援室, 研究員
Affiliation (based on the past Project Information) *help	2025: 公益財団法人高輝度光科学研究センター, 産学総合支援室, 研究員 2022: 公益財団法人高輝度光科学研究センター, データ駆動科学グループ, 研究員 2021: 公益財団法人高輝度光科学研究センター, 分光推進室, 博士研究員 2021: 公益財団法人高輝度光科学研究センター, 放射光利用研究基盤センター, 博士研究員 2019 – 2020: 公益財団法人高輝度光科学研究センター, 分光・イメージング推進室, 博士研究員
Review Section/Research Field	Principal Investigator Basic Section 80040:Quantum beam science-related Except Principal Investigator Basic Section 80040:Quantum beam science-related
Keywords	Principal Investigator 時空間分解計測 / コヒーレント回折イメージング / 位相回復アルゴリズム開発 / シングルショットイメージング / スパースモデリング / 位相回復アルゴリズム Except Principal Investigator 磁性脳型デバイス / インフォマティクス / X線顕微鏡 / 磁気イメージング … More / 共鳴X線散乱 / X線磁気円二色性 / 強磁性共鳴 / 軟X線顕微鏡 / 磁性体 Less

X線時分割顕微手法とインフォマティクスを融合したマグノン脳型デバイスの可視化
- Principal Investigator
  
  石井祐太
- Project Period (FY)
  2025 – 2027
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Review Section
  
  Basic Section 80040:Quantum beam science-related
- Research Institution
  National Institute for Materials Science
Time- and spatially- resolved measurements of magnetic texture using ultrafast coherent X-ray pulsePrincipal Investigator
- Principal Investigator
  
  Yokoyama Yuichi
- Project Period (FY)
  2019 – 2022
- Research Category
  
  Grant-in-Aid for Early-Career Scientists
- Review Section
  
  Basic Section 80040:Quantum beam science-related
- Research Institution
  Japan Synchrotron Radiation Research Institute
Visualization of magnon motion by time-resolved coherent soft x-ray microscopy
- Principal Investigator
  
  YAMASAKI Yuichi
- Project Period (FY)
  2019 – 2021
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Review Section
  
  Basic Section 80040:Quantum beam science-related
- Research Institution
  National Institute for Materials Science

All 2022 2021 2020 2019

All Journal Article Presentation

[Journal Article] Phase Retrieval Algorithm based on Total Variation Regularization for Ferromagnetic Domain Patterns2022
- Author(s)
  Yokoyama Yuichi、Yamasaki Yuichi、Okada Masato、Mizumaki Masaichiro
- Journal Title
  
  Journal of the Physical Society of Japan
  
  Volume: 91 Issue: 3 Pages: 034701-034701
- DOI
  10.7566/jpsj.91.034701
- NAID
  210000159603
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19H04399, KAKENHI-PROJECT-19K20603
[Journal Article] Phase Retrieval Algorithm based on Total Variation Regularization for Ferromagnetic Domain Patterns2022
- Author(s)
  YOKOYAMA Yuichi
- Journal Title
  
  Nihon Kessho Gakkaishi
  
  Volume: 64 Issue: 2 Pages: 109-110
- DOI
  10.5940/jcrsj.64.109
- ISSN
  0369-4585, 1884-5576
- Year and Date
  2022-05-31
- Language
  Japanese
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-19K20603
[Journal Article] Frustration-driven magnetic fluctuations as the origin of the low-temperature skyrmion phase in Co7Zn7Mn62021
- Author(s)
  Ukleev V.、Karube K.、Derlet P. M.、Wang C. N.、Luetkens H.、Morikawa D.、Kikkawa A.、Mangin-Thro L.、Wildes A. R.、Yamasaki Y.、Yokoyama Y.、Yu L.、Piamonteze C.、Jaouen N.、Tokunaga Y.、R?nnow H. M.、Arima T.、Tokura Y.、Taguchi Y.、White J. S.
- Journal Title
  
  npj Quantum Materials
  
  Volume: 6 Issue: 1 Pages: 40-40
- DOI
  10.1038/s41535-021-00342-5
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K15164, KAKENHI-PLANNED-19H05826, KAKENHI-PROJECT-19H01835, KAKENHI-PROJECT-19H04399
[Journal Article] X-ray study of ferroic octupole order producing anomalous Hall effect2021
- Author(s)
  Kimata Motoi、Sasabe Norimasa、Kurita Kensuke、Yamasaki Yuichi、Tabata Chihiro、Yokoyama Yuichi、Kotani Yoshinori、Ikhlas Muhammad、Tomita Takahiro、Amemiya Kenta、Nojiri Hiroyuki、Nakatsuji Satoru、Koretsune Takashi、Nakao Hironori、Arima Taka-hisa、Nakamura Tetsuya
- Journal Title
  
  Nature Communications
  
  Volume: 12 Issue: 1 Pages: 5582-5582
- DOI
  10.1038/s41467-021-25834-7
- NAID
  120007153096
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K03736, KAKENHI-PROJECT-20H04458, KAKENHI-PLANNED-19H05826, KAKENHI-PROJECT-19H01835, KAKENHI-PROJECT-19H04399
[Journal Article] Particle-size dependent structural transformation of skyrmion lattice2020
- Author(s)
  Takagi R.、Yamasaki Y.、Yokouchi T.、Ukleev V.、Yokoyama Y.、Nakao H.、Arima T.、Tokura Y.、Seki S.
- Journal Title
  
  Nature Communications
  
  Volume: 11 Issue: 1 Pages: 5685-5685
- DOI
  10.1038/s41467-020-19480-8
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18H03685, KAKENHI-PROJECT-19H04399, KAKENHI-PLANNED-19H05826, KAKENHI-PROJECT-19H01835, KAKENHI-PROJECT-20H04458
[Journal Article] Soft-X-Ray Vortex Beam Detected by Inline Holography2020
- Author(s)
  Ishii Yuta、Yamamoto Kohei、Yokoyama Yuichi、Mizumaki Masaichiro、Nakao Hironori、Arima Taka-hisa、Yamasaki Yuichi
- Journal Title
  
  Physical Review Applied
  
  Volume: 14 Issue: 6 Pages: 064069-064069
- DOI
  10.1103/physrevapplied.14.064069
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19H04399, KAKENHI-PROJECT-17K05130, KAKENHI-PROJECT-19K23590, KAKENHI-PLANNED-19H05826, KAKENHI-PROJECT-19H01835, KAKENHI-PROJECT-20H04458
[Journal Article] High pressure synthesis of a quasi-one-dimensional GdFeO3-type perovskite PrCuO3 with nearly divalent Cu ions2019
- Author(s)
  Ito Masaharu、Takahashi Hidefumi、Sakai Hideaki、Sagayama Hajime、Yamasaki Yuichi、Yokoyama Yuichi、Setoyama Hiroyuki、Wadati Hiroki、Takahashi Kanako、Kusano Yoshihiro、Ishiwata Shintaro
- Journal Title
  
  Chemical Communications
  
  Volume: 55 Issue: 61 Pages: 8931-8934
- DOI
  10.1039/c9cc04656a
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19K05662, KAKENHI-PROJECT-19H04399, KAKENHI-PROJECT-17H01195
[Presentation] 迷路状磁区構造の軟 X 線回折図形に対するTV-L2 正則化位相回復法2022
- Author(s)
  横山優一、山崎裕一、岡田真人、水牧仁一朗
- Organizer
  第35回日本放射光学会年会・放射光科学合同シンポジウム
- Data Source
  KAKENHI-PROJECT-19K20603
[Presentation] Phase Retrieval Algorithm based on Total Variation Regularization for Ferromagnetic Domain Patterns2022
- Author(s)
  Yokoyama Yuichi、Yamasaki Yuichi、Okada Masato、Mizumaki Masaichiro
- Organizer
  OPTICS & PHOTONICS International Congress 2022 (LSC2022)
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K20603
[Presentation] 迷路状磁区構造の軟X線回折図形に対するTV正則化位相回復法2021
- Author(s)
  横山優一、山崎裕一、岡田真人、水牧仁一朗
- Organizer
  日本物理学会第76回年次大会
- Data Source
  KAKENHI-PROJECT-19K20603
[Presentation] 磁区構造の軟 X 線回折図形に対する TV-L2 正則化位相回復法2021
- Author(s)
  横山優一、山崎裕一、岡田真人、水牧仁一朗
- Organizer
  第１３回放射光学会若手研究会「先端的レーザー分光測定技術の進化とその応用」
- Data Source
  KAKENHI-PROJECT-19K20603
[Presentation] TV＋L2正則化を用いたCDI像位相回復法2021
- Author(s)
  横山優一、山崎裕一、岡田真人、水牧仁一朗
- Organizer
  第71回SPring-8先端利用技術ワークショップ/「第3回データ駆動科学によるデータ解析高度化」
- Invited
- Data Source
  KAKENHI-PROJECT-19K20603
[Presentation] Sparse phase retrieval algorithm for observing isolated magnetic skyrmions2019
- Author(s)
  Yuichi Yokoyama
- Organizer
  The 40th International Conference on Vacuum Ultraviolet and X-ray Physics
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K20603

1. YAMASAKI Yuichi (70571610)

# of Collaborated Projects: 1 results

# of Collaborated Products: 2 results
2. 石井祐太 (40847232)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
3. KUSANO Yoshihiro

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results
4. 軽部皓介

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results
5. 木俣基

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results
6. 関真一郎

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results

Yokoyama Yuichi 横山 優一

Research Projects

Research Products

Co-Researchers

X線時分割顕微手法とインフォマティクスを融合したマグノン脳型デバイスの可視化

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Time- and spatially- resolved measurements of magnetic texture using ultrafast coherent X-ray pulsePrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Visualization of magnon motion by time-resolved coherent soft x-ray microscopy

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

[Journal Article] Phase Retrieval Algorithm based on Total Variation Regularization for Ferromagnetic Domain Patterns2022

Author(s)

Journal Title

DOI

NAID

Data Source

[Journal Article] Phase Retrieval Algorithm based on Total Variation Regularization for Ferromagnetic Domain Patterns2022

Author(s)

Journal Title

DOI

ISSN

Year and Date

Language

Data Source

[Journal Article] Frustration-driven magnetic fluctuations as the origin of the low-temperature skyrmion phase in Co7Zn7Mn62021

Author(s)

Journal Title

DOI

Data Source

[Journal Article] X-ray study of ferroic octupole order producing anomalous Hall effect2021

Author(s)

Journal Title

DOI

NAID

Data Source

[Journal Article] Particle-size dependent structural transformation of skyrmion lattice2020

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Soft-X-Ray Vortex Beam Detected by Inline Holography2020

Author(s)

Journal Title

DOI

Data Source

[Journal Article] High pressure synthesis of a quasi-one-dimensional GdFeO3-type perovskite PrCuO3 with nearly divalent Cu ions2019

Author(s)

Journal Title

DOI

Data Source

[Presentation] 迷路状磁区構造の軟 X 線回折図形に対するTV-L2 正則化位相回復法2022

Author(s)

Organizer

Data Source

[Presentation] Phase Retrieval Algorithm based on Total Variation Regularization for Ferromagnetic Domain Patterns2022

Author(s)

Organizer

Data Source

[Presentation] 迷路状磁区構造の軟X線回折図形に対するTV正則化位相回復法2021

Author(s)

Organizer

Data Source

[Presentation] 磁区構造の軟 X 線回折図形に対する TV-L2 正則化位相回復法2021

Author(s)

Organizer

Data Source

[Presentation] TV＋L2正則化を用いたCDI像位相回復法2021

Author(s)

Yokoyama Yuichi 横山優一