Einstein-de Haas phase shifts in surface acoustic waves

Tateno, Shoma*; Kurimune, Yuki*; Matsuo, Mamoru; Yamanoi, Kazuto*; Nozaki, Yukio*

Physical Review B, 104(2), p.L020404_1 - L020404_5, 2021/07

https://doi.org/10.1103/PhysRevB.104.L020404

Electrical evaluation of the alternating spin current generated via spin-vorticity coupling

Tateno, Shoma*; Okano, Genki*; Matsuo, Mamoru; Nozaki, Yukio*

Physical Review B, 102(10), p.104406_1 - 104406_9, 2020/09

https://doi.org/10.1103/PhysRevB.102.104406

Observation of gyromagnetic spin wave resonance in NiFe films

Kurimune, Yuki*; Matsuo, Mamoru; Nozaki, Yukio*

Physical Review Letters, 124(21), p.217205_1 - 217205_6, 2020/05

https://doi.org/10.1103/PhysRevLett.124.217205

This Letter demonstrates spin wave resonance (SWR) owing to the gyromagnetic effect by propagating a Rayleigh-type surface acoustic wave (R-SAW) through ferromagnetic thin films. The SWR amplitude in a NiFe film shows a higher-order frequency variation than in a magnetoelastic Ni film. This frequency dependence is well understood in terms of the presence of a gyromagnetic field attributable to the local lattice rotation in the R-SAW. From the frequency dependence of the SWR amplitude, the gyromagnetic SWR could be separated from another SWR caused by a magnetoelastic effect of the ferromagnet.