Skyrmion-generated spinmotive forces in inversion broken ferromagnets
Skyrmion-generated spinmotive forces in inversion broken ferromagnets
复制标题
反转破碎铁磁体中斯格明子产生的自旋势
DOI:
10.1016/j.jmmm.2019.165550
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发表时间:
2019
影响因子:
2.7
通讯作者:
Ieda Jun’ichi
中科院分区:
文献类型:
--
作者:
Yamane Yuta;Ieda Jun’ichi
We present an analytical study on the spinmotive force (SMF) generated by translational motion of magnetic skyrmion. A SMF refers to an electrical voltage induced by dynamical magnetic textures, which reflects the spatiotemporal variation of the magnetization. The dynamics of a skyrmion thus can be detected by a SMF measurement, which may play an important role in future skyrmion-based technologies. We find the dependence of the SMF on skyrmion structure (eg, skyrmion or anti-skyrmion, Neel or Bloch type, and the polarity of the skyrmion core) and Rashba and Dresselhaus spin-orbit couplings (SOCs). To this end, we derive explicit formulae for the spin-dependent electric fields originating from the two SOCs. Our findings offer a comprehensive understanding of the phenomenon and an estimation of the electrical voltage signal associated with a moving skyrmion for a given experiment.