Theory of Emergent Inductance with Spin-Orbit Coupling Effects

Yuta Yamane, Shunsuke Fukami, and Jun’ichi Ieda
Phys. Rev. Lett. 128, 147201 – Published 7 April 2022

Abstract

We extend the theory of emergent inductance, which has recently been discovered in spiral magnets, to arbitrary magnetic textures by taking into account spin-orbit couplings arising in the absence of spatial inversion symmetry. We propose a new concept of spin-orbit emergent inductance, which can be formulated as originating from a dynamical Aharonov-Casher phase of an electron in ferromagnets. The spin-orbit emergent inductance universally arises in the coexistence of magnetism and the spin-orbit couplings, even with spatially uniform magnetization, allowing its stable operation in wide ranges of temperature and frequency. Revisiting the widely studied systems involving ferromagnets with spatial inversion asymmetry, with the new perspective offered by our work, will lead to opening a new paradigm in the study of spin-orbit physics and the spintronics-based power management in ultrawideband frequency range.

  • Figure
  • Received 26 August 2021
  • Revised 23 December 2021
  • Accepted 25 February 2022

DOI:https://doi.org/10.1103/PhysRevLett.128.147201

© 2022 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Yuta Yamane1,2, Shunsuke Fukami2,3,4,5,6, and Jun’ichi Ieda7

  • 1Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai 980-8578, Japan
  • 2Research Institute of Electrical Communication, Tohoku University, Sendai 980-8577, Japan
  • 3Center for Spintronics Research Network, Tohoku University, Sendai 980-8577, Japan
  • 4Center for Science and Innovation in Spintronics, Tohoku University, Sendai 980-8577, Japan
  • 5Center for Innovative Integrated Electronic Systems, Tohoku University, Sendai 980-0845, Japan
  • 6WPI-Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
  • 7Advanced Science Research Center, Japan Atomic Energy Agency, Tokai 319-1195, Japan

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Issue

Vol. 128, Iss. 14 — 8 April 2022

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