2023 Fiscal Year Annual Research Report
Efficient spin current generation based on coherent magnetoelastic strong coupling state
| Project/Area Number |
19H05629
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| Research Institution | Institute of Physical and Chemical Research |
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Principal Investigator |
大谷 義近 国立研究開発法人理化学研究所, 創発物性科学研究センター, チームリーダー (60245610)
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| Co-Investigator(Kenkyū-buntansha) |
小川 直毅 国立研究開発法人理化学研究所, 創発物性科学研究センター, チームリーダー (30436539)
近藤 浩太 国立研究開発法人理化学研究所, 創発物性科学研究センター, 上級研究員 (60640670)
Puebla Jorge 国立研究開発法人理化学研究所, 創発物性科学研究センター, 研究員 (60753647)
一色 弘成 東京大学, 物性研究所, 助教 (80812635)
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| Project Period (FY) |
2019-06-26 – 2024-03-31
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| Keywords | 磁気弾性結合 / 強結合 / スピン流 / エデルシュタイン効果 |
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| Outline of Annual Research Achievements |
In the past fiscal year, we dedicated significant effort to demonstrating the strong coupling between surface acoustic waves (phonons) and spin waves (magnons). We designed and fabricated surface acoustic wave devices incorporating acoustic reflectors to form an acoustic cavity. This cavity effectively reduces phonon losses, while our devices utilize a ferromagnetic layer with low magnetic damping. Through careful engineering of our magneto-acoustic wave devices, we achieved the groundbreaking observation of strong magnon-phonon coupling in an on-chip device at room temperature, a first-of-its-kind worldwide. Our achievement was published in Physical Review Letters (Physical Review Letters 132 (5), 056704, 2024) and was selected as an Editor's suggestion, and earned a spot on the front cover of the journal issue. Furthermore, it produced highlights in Science Magazine and RIKEN. We believe that our demonstration of strong magnon-phonon coupling paves the way for exciting advancements in wave-based information and communication technologies, opening up intriguing avenues for further research and development.
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| Research Progress Status |
令和5年度が最終年度であるため、記入しない。
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| Strategy for Future Research Activity |
令和5年度が最終年度であるため、記入しない。
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[Journal Article] Strongly Coupled Spin Waves and Surface Acoustic Waves at Room Temperature2024
Author(s)
Hwang Yunyoung, Puebla Jorge, Kondou Kouta, Gonzalez-Ballestero Carlos, Isshiki Hironari, Munoz Carlos Sanchez, Liao Liyang, Chen Fa, Luo Wei, Maekawa Sadamichi, Otani Yoshichika
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Journal Title
Physical Review Letters
Volume: 132
Pages: 056704-1～5
DOI
Peer Reviewed / Open Access / Int'l Joint Research
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[Presentation] Acoustically Driven Magnon-Phonon Coupling in a Layered Antiferromagnet2024
Author(s)
J. Puebla, T.P. Lyons, K. Yamamoto, R.S. Deacon, Y. Hwang, K. Ishibashi, S. Maekawa, & Y. Otani,
Organizer
APS March Meeting, Minneapolis, USA, March 2024.
Int'l Joint Research / Invited
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[Presentation] Strong coupling between spin waves and surface acoustic wave2024
Author(s)
Y. Hwang, J. Puebla, K. Kondou, C. Gonzalez-Ballestero, H. Isshiki, C. Sanchez Munoz, L. Liao, F. Chen, W. Luo, S. Maekawa, & Y. Otani
Organizer
APS March Meeting, Minneapolis, USA, March 2024.
Int'l Joint Research
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[Presentation] Valley-selective phonon-magnon scattering in magnetoelastic superlattices2023
Author(s)
L. Liao, J. Puebla, K. Yamamoto, J. Kim, S. Maekawa, Y. Hwang, Y. Ba, & Y. Otani
Organizer
5th International Workshop on Spintronic Memory and Logic, SML, Beijing, China, Oct. 2023.
Int'l Joint Research
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[Presentation] Observation of the coupled magnon-phonon mode splitting in a surface acoustic wave cavity device2023
Author(s)
Y. Hwang, J. Puebla, K. Kondou, C. Gonzalez-Ballestero, C. Sanchez Munoz, H. Isshiki, L. Liao, F. Chen, W. Luo, S. Maekawa, & Y. Otani
Organizer
JEMS 2023, Madrid, Spain, Aug. 2023
Int'l Joint Research
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