Prediction of giant spin motive force due to Rashba spin-orbit coupling

Kyoung Whan Kim, Jung Hwan Moon, Kyung Jin Lee, Hyun Woo Lee

Research output: Contribution to journalArticle

77 Citations (Scopus)

Abstract

Magnetization dynamics in a ferromagnet can induce a spin-dependent electric field through a spin motive force. Spin current generated by the spin-dependent electric field can in turn modify the magnetization dynamics through spin-transfer torque. While this feedback effect is usually weak and thus ignored, we predict that in Rashba spin-orbit coupling systems with a large Rashba parameter α R, the coupling generates the spin-dependent electric field [±(α Rm e/e)(z×-m/-t)], which can be large enough to modify the magnetization dynamics significantly. This effect should be relevant for device applications based on ultrathin magnetic layers with strong Rashba spin-orbit coupling.

Original languageEnglish
Article number217202
JournalPhysical review letters
Volume108
Issue number21
DOIs
Publication statusPublished - 2012 May 23

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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