Dzyaloshinskii-Moriya Interaction as a Consequence of a Doppler Shift due to Spin-Orbit-Induced Intrinsic Spin Current

Toru Kikuchi, Takashi Koretsune, Ryotaro Arita, Gen Tatara

Research output: Contribution to journalArticlepeer-review

69 Citations (Scopus)

Abstract

We present a physical picture for the emergence of the Dzyaloshinskii-Moriya (DM) interaction based on the idea of the Doppler shift by an intrinsic spin current induced by spin-orbit interaction under broken inversion symmetry. The picture is confirmed by a rigorous effective Hamiltonian theory, which reveals that the DM coefficient is given by the magnitude of the intrinsic spin current. Our approach is directly applicable to first principles calculations and clarifies the relation between the interaction and the electronic band structures. Quantitative agreement with experimental results is obtained for the skyrmion compounds Mn1-xFexGe and Fe1-xCoxGe.

Original languageEnglish
Article number247201
JournalPhysical review letters
Volume116
Issue number24
DOIs
Publication statusPublished - 2016 Jun 13
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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