ファンデルワールス界面およびそのヘテロ構造におけるマグノンーフォノン結合
【研究キーワード】
magnon-phonon coupling / spintronics / magnonics
【研究成果の概要】
Work commenced in December 2021. Since then, multiple new samples have been fabricated consisting of antiferromagnetic chromium trichloride (CrCl3) exfoliated flakes on top of lithium niobate (LiNbO3) piezoelectric substrates with lithographically defined interdigital transducers, allowing generation and detection of surface acoustic waves (SAWs). Resonant coupling between SAWs and the acoustic magnon mode of CrCl3 has been demonstrated at 1.1GHz, representing a first step towards the study of magnon-phonon coupling in van der Waals magnetic materials. The absorption of SAWs by the CrCl3 indicates excitation of magnons, and is observed to disappear upon heating the sample towards the Neel temperature, likely confirming the dependence on magnetic order.
【研究代表者】
【研究種目】特別研究員奨励費
【研究期間】2021-11-18 - 2024-03-31
【配分額】2,200千円 (直接経費: 2,200千円)