[18a-D704-1~11] 10.2 スピン基盤技術・萌芽的デバイス技術

▲ [18a-D704-1] Theoretical investigation of cavity magnomechanics with a synthetic antiferromagnet

〇Motoki Asano¹、Hiroki Matsumoto²、Masamitsu Hayashi²、Daiki Hatanaka¹ (1.NTT BRL、2.The Univ. of Tokyo)

キーワード：Cavity magnomechanics, Synthetic antiferromagnet, Magnetostrictive coupling

Creating novel phononic and spintronic functionalities is expected by controlling interaction between phonons in an acoustic resonator and spin precessions (i.e., magnons) in a ferromagnet. Although magnetoelastic coupling via magnetostriction has been extensively studied for single-layer ferromagnetic films, the coupling dynamics of the interaction between multilayer ferromagnetic films with hybridized magnon modes and resonator phonons remains largely unexplored. We theoretically analyzed the spin precession of a two-layer ferromagnetic film antiferromagnetically coupled to surface acoustic waves and clarified its coupling dynamics.