Rchr
J-GLOBAL ID：202001009687994306
Update date: Feb. 09, 2026
Usami Takamasa
ウサミ タカマサ | Usami Takamasa
Affiliation and department：
Research field (2)：
Magnetism, superconductivity, and strongly correlated systems
, Applied materials
Research keywords (4)：
分子線エピタキシー法
, 磁性薄膜
, マルチフェロイクス
, スピントロニクス
Research theme for competitive and other funds (3)：
- 2024 - 2026 超伝導デジタル回路用メモリのための磁性ジョセフソン接合素子の電界制御技術の構築
- 2021 - 2023 反強磁性・強磁性相転移を利用した反強磁性スピン配列の電界制御と磁気メモリへの応用
- 2017 - 2020 マグノニクス技術の創成に資するスピン波生成・伝播・位相特性の電界制御
Papers (26)：
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Takamasa Usami, Yuichi Murakami, Ryota Watarai, Yu Shiratsuchi, Yoshihiro Gohda, Kohei Hamaya. Orbital Magnetic Moment Controlled Converse Magnetoelectric Effect in bcc-Co3Mn/Fe/V/PMN-PT Multiferroic Heterostructures. Advanced Science. 2026
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Shinya Yamada, Takamasa Usami, Sachio Komori, Yoshio Miura, Kazuto Yamanoi, Yukio Nozaki, Tomoyasu Taniyama, Kohei Hamaya. Electric-Field Control of Low Damping Constant in Epitaxial Co2FeSi/LiNbO3 Multiferroic Heterostructures. Advanced Science. 2025
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M. Nishioka, T. Kakutani, T. Kiire, T. Usami, S. Yamada, K. Hamaya. Perpendicularly magnetized Mn60Ga40 films on Ge(001) grown at low temperature. Journal of Magnetism and Magnetic Materials. 2025. 630. 15. 173338
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T. Usami, Y. Kubo, K. Suzuki, S. Mizukami, K. Hamaya. Piezoelectric strain-mediated control of the tunnel magnetoresistance effect in magnetic tunnel junctions with a Co2FeSi/V/PMN-PT multiferroic heterostructure. Applied Physics Letters. 2025. 127. 3. 032404
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K. Oki, S. Ueda, T. Usami, S. Fujii, S. Kikuoka, K. Yamamoto, K. Sawano, K. Hamaya. Room-temperature spin transport through band-to-band tunneling at semiconductor p - n junctions. Physical Review Applied. 2025. 23. 5. L051005
ｍore...
MISC (2)：
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Detecting Modulation of Orbital Magnetic Moments and Magnetic Anisotropy via Operando X-ray Magnetic Spectroscopies. 2024. 19. 3. 133-137
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T. Usami, T. Miyauchi, K. Ichikawa, M. Itoh, T. Taniyama. Transmission of spin waves in ordered FeRh films. Proceeding JW-Visual 2016. 2016. 3
Patents (2)：
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積層体及びそれを備える磁気抵抗素子
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積層体、磁気抵抗素子、および、積層体製造方法
Lectures and oral presentations (51)：
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Co2FeSi/PMN-PT Multiferroic Heterostructures for Electric-Field-Controlled Spintronic Devices
(The 16th APCTP Workshop on Multiferroics 2025)
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垂直磁化Mn-Ga合金/Ge(001)ヘテロ構造の低温形成
(第49回日本磁気学会学術講演会 2025)
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エピタキシャルCo2FeSi/LiNbO3界面マルチフェロイクヘテロ構造における磁気ダンピング定数の電界変調
(第49回日本磁気学会学術講演会 2025)
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Low-temperature growth of perpendicularly magnetized MnGa thin films on MgO(001) substrate using molecular beam epitaxy
(ICMBE2024 2025)
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Epitaxy of Ge Thin Layers on Perpendicularly Magnetized Mn-Ga
(ICMBE 2024 2025)
ｍore...
Professional career (1)：
Work history (3)：
- 2024/10 - 現在 Osaka University Spintronics Research Network Division, Institute for Open and Transdisciplinary Research Initiatives
- 2023/10 - 2024/09 Osaka University Center for Spintronics Research Network, Graduate School of Engineering Science Assistant Professor
- 2020/04 - 2023/09 Osaka University Center for Spintronics Research Network, Graduate School of Engineering Science
Association Membership(s) (3)：
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