Magnon-phonon coupling at the van der Waals interface and its heterostructure

• Project/Area Number: 21F21774
• Research Category: Grant-in-Aid for JSPS Fellows
• Allocation Type: Single-year Grants
• Section: 外国
• Review Section: Basic Section 13030:Magnetism, superconductivity and strongly correlated systems-related
• Research Institution: Institute of Physical and Chemical Research
• 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)
• Co-Investigator(Kenkyū-buntansha): LYONS THOMAS 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, 外国人特別研究員
• Project Period (FY): 2021-11-18 – 2024-03-31
• Project Status: Completed (Fiscal Year 2022)
• Budget Amount: ¥2,200,000 (Direct Cost: ¥2,200,000); Fiscal Year 2022: ¥1,100,000 (Direct Cost: ¥1,100,000); Fiscal Year 2021: ¥600,000 (Direct Cost: ¥600,000)
• Keywords: スピンフォトニクス / 強結合 / マグノンフォノン結合 / magnon-phonon coupling / spintronics / magnonics

Outline of Research at the Start

This project studies magnon-phonon coupling in novel classes of atomically thin ferro- and antiferromagnetic layered van der Waals crystals and associated heterostructures transferred onto piezoelectric LiNbO3 substrates, to launch surface acoustic waves (SAWs) through the substrate, and electrically measure the magnetoelastic interaction at the substrate and magnetic crystal interface.

Outline of Annual Research Achievements

In this project, we have established a technique for injecting surface acoustic waves (SAWs) through atomically thin ferromagnetic and antiferromagnetic layered van der Waals crystals and related heterostructure substrates transferred onto a piezoelectric LiNbO3 substrate to investigate magnetoelastic coupling.
Using this technique, we have demonstrated for the first time the coupling of SAWs to antiferromagnetic layered crystals by injecting GHz surface acoustic waves (SAWs) into layered crystalline chromium trichloride (CrCl3). Antiferromagnetic spin wave modes can be excited below the Neel temperature in this layered antiferromagnet.

Research Progress Status

翌年度、交付申請を辞退するため、記入しない。

Strategy for Future Research Activity

翌年度、交付申請を辞退するため、記入しない。

Research Products

• [Int'l Joint Research] University of Sheffield(英国)
• [Int'l Joint Research] Universite Clermont Auvergne INP/Institut Universitaire de France (IUF)(フランス)
• [Int'l Joint Research] Technische Universitaet Dortmund(ドイツ)
• [Int'l Joint Research] Russian Academy of Sciences(ロシア連邦)
• [Int'l Joint Research] University of Sheffield(英国)
• [Journal Article] Giant effective Zeeman splitting in a monolayer semiconductor realized by spin-selective strong light-matter coupling (2022)
  • Author(s): T. P. Lyons, D. J. Gillard, C. Leblanc, J. Puebla, D. D. Solnyshkov, L. Klompmaker, I. A. Akimov, C. Louca, P. Muduli, A. Genco, M. Bayer, Y. Otani, G. Malpuech, & A. I. Tartakovskii
  • Journal Title: Nature Photonics Volume: 16 Issue: 9 Pages: 632-636
  • DOI: 10.1038/s41566-022-01025-8
  • Peer Reviewed / Int'l Joint Research
• [Presentation] Giant effective Zeeman splitting realized by spin-selective strong light-matter coupling (2021)
  • Author(s): T. P. Lyons, D. J. Gillard, C. Leblanc, J. Puebla, D. D. Solnyshkov, C. Louca, P. Muduli, A. Genco, Y. Otani, G. Malpuech, A. Tartakovskii
  • Organizer: Graphene Online, April 20 2021
  • Int'l Joint Research
• [Remarks] 東京大学大谷研究室 & 理化学研究所量子ナノ磁性研究チーム
  • URL: https://otaniqnm.com/