Skyrmion-generated spinmotive forces in inversion broken ferromagnets

Yuta Yamane, Jun'ichi Ieda

Research output: Contribution to journalArticlepeer-review

Abstract

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 (e.g., skyrmion or anti-skyrmion, Néel 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.

Original languageEnglish
Article number165550
JournalJournal of Magnetism and Magnetic Materials
Volume491
DOIs
Publication statusPublished - 2019 Dec 1

Keywords

  • Dresselhaus spin-orbit interaction
  • Rashba spin-orbit interaction
  • Skyrmion
  • Spinmotive force

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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