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Yusuke Kozuka
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Development of Multi-scale Soft X-ray Diffraction Microscope for Observing Spin Textures
Description/Abstract:
軟X線回折顕微鏡を用いて実空間磁区観察を可能とする手法開発を行った。[Pt/Co/Ta]ヘテロ構造を用いて、解析を行わずにサブμm~mmまでの大きなダイナミックレンジの磁区観察が可能であることを示した。今後、磁気スキルミオン等の実空間・実時間ダイナミクス等へ適用する土台が整った。
Keyword:
Soft X-ray Diffraction Microscope
Resource Type:
ProceedingsArticle
Author:
Yuta Ishii
,
Yusuke Kozuka
,
Yuichi Yamasaki
,
Hironori Nakao
,
Yuta Ishii
,
Yusuke Kozuka
,
Yuichi Yamasaki
, and
Hironori Nakao
Date Uploaded:
19/03/2024
Charge transport and thermopower in the electron-doped narrow gap semiconductor Ca1−xLaxPd3O4
Description/Abstract:
狭ギャップ半導体であるCa1-xLaxPd3O4の輸送特性、熱電特性、電子状態計測を行った。x=0では0.1eV程度のバンドギャップを持ち、第一原理計算と一致した。また、Laによる電子ドープにより急激に抵抗は減少しx=0.01では金属的になった。一方で、ゼーベック係数はxに...
Keyword:
Palladates
Resource Type:
Article
Author:
Kouta Kazama
,
Masato Sakano
,
Kohei Yamagami
,
Takuo Ohkochi
,
Kyoko Ishizaka
,
Terumasa Tadano
,
Yusuke Kozuka
,
Hidetoshi Yoshizawa
,
Yoshihiro Tsujimoto
,
Kazunari Yamaura
, and
Jun Fujioka
Journal:
Physical Review Materials
Date Uploaded:
02/12/2023
Date Modified:
04/12/2023
Observation of charge-to-spin conversion with giant efficiency at Ni0.8Fe0.2/Bi2WO6 interface
Description/Abstract:
酸化物強誘電体Bi2WO6を用いて、Py/Bi2WO6ヘテロ構造を作製し、界面における電荷-スピン変換効率を計測した。その結果、非常に高い変換効率を示した。これは、BiやWの強いスピン軌道相互作用に起因すると予想される。
Keyword:
charge-to-spin current conversion
Resource Type:
Article
Author:
Saikat Das
,
Satoshi Sugimoto
,
Varun Kumar Kushwaha
,
Yusuke Kozuka
, and
Shinya Kasai
Journal:
APL Materials
Date Uploaded:
02/12/2023
Date Modified:
03/12/2023
Epitaxy and transport properties of alkali-earth palladate thin films
Description/Abstract:
In this study, given the theoretical prediction of Dirac bands in CaPd3O4, we investigate the fabrication and transport properties of SrP...
Keyword:
Palladate thin film
Resource Type:
Article
Author:
Yusuke Kozuka
,
Taisuke T. Sasaki
,
Terumasa Tadano
, and
Jun Fujioka
Journal:
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
Date Uploaded:
02/12/2023
Date Modified:
03/12/2023
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Palladate thin film
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Soft X-ray Diffraction Microscope
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charge-to-spin current conversion
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Creative Commons BY Attribution 4.0 International
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Author
Yusuke Kozuka
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