Microscopic theory of electrically induced spin torques in magnetic weyl semimetals

Daichi Kurebayashi, Yasufumi Araki, Kentaro Nomura

Research output: Contribution to journalArticlepeer-review

Abstract

We theoretically study current- and charge-induced spin torques in magnetic Weyl semimetals (WSMs). In magnetic WSMs, a topologically nontrivial band structure mediates the anomalous coupling between magnetization and transport, making WSMs preferable for spintronics systems. In this study, we determine all current-induced spin torques including spin-orbit torque and spin-transfer torque, up to the first order with respect to spatial and temporal derivatives and electrical currents. We also calculate the charge-induced spin torque microscopically. We find that the charge-induced spin torque originates from the chiral anomaly due to the correspondence between spin operators and axial current operators in our model.

Original languageEnglish
Article number084702
Journaljournal of the physical society of japan
Volume90
Issue number8
DOIs
Publication statusPublished - 2021 Aug 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint

Dive into the research topics of 'Microscopic theory of electrically induced spin torques in magnetic weyl semimetals'. Together they form a unique fingerprint.

Cite this