Non-reciprocal pumping of surface acoustic waves by spin wave resonance

Kei Yamamoto, Weichao Yu, Tao Yu, Jorge Puebla, Mingran Xu, Sadamichi Maekawa, Gerrit Bauer

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


We predict that surface acoustic waves are generated preferentially in one direction in a heterostructure of a thin magnetic film on a non-magnetic substrate. The non-reciprocity arises from magneto-elastic coupling and magnetorotation coupling, the former being dominant for YIG=GGG heterostructures. For YIG films thinner than about 100 nm, the surface acoustic wave amplitude is nearly unidirectional at certain angles of the in-plane equilibrium magnetisation. We compute the full magnetic field dependence of the effect for a selected device.

Original languageEnglish
Article number113702
Journaljournal of the physical society of japan
Issue number11
Publication statusPublished - 2020 Nov 15

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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