Spin Elastodynamic Motive Force
Spin Elastodynamic Motive Force
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DOI：
10.1103/physrevlett.128.077201
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发表时间：
2022-02-18
影响因子：
8.6
通讯作者：
Matsuo, Mamoru
中科院分区：
文献类型：
--
作者：
Funato, Takumi;Matsuo, Mamoru
利用自旋-涡度耦合(SVC)理论研究了声表面波作用下简单铁磁单分子膜中的自旋动势(SMF)。SMF有两个机制。第一种是SVC驱动的SMF，产生一次谐波电动势；第二种是SVC和磁弹性耦合的相互作用，产生直流和二次谐波电动势。我们证明了在多晶镍中可以检测到由瑞利型表面声波引起的这些电压。在我们的方法中，没有使用复杂的器件结构、非共线磁性结构或强自旋轨道材料。因此，它旨在极大地拓宽SMF应用的范围。
The spin-motive force (SMF) in a simple ferromagnetic monolayer caused by a surface acoustic wave is studied theoretically via spin-vorticity coupling (SVC). The SMF has two mechanisms. The first is the SVC-driven SMF, which produces the first harmonic electromotive force, and the second is the interplay between the SVC and the magnetoelastic coupling, which produces the dc and second harmonic electromotive forces. We show that these electric voltages induced by a Rayleigh-type surface acoustic wave can be detected in polycrystalline nickel. No sophisticated device structures, noncollinear magnetic structures, or strong spin-orbit materials are used in our approach. Consequently, it is intended to broaden the spectrum of SMF applications considerably.