Spin pumping in the presence of spin-orbit coupling

Kai Chen, Shufeng Zhang

Research output: Contribution to journalArticlepeer-review

98 Scopus citations

Abstract

Spin pumping and related phenomena have been observed recently in heavy metals and topological insulators, where the spin-orbit coupling plays an essential role. We have developed a spin-pumping formalism that explicitly includes the spin-orbit coupling at interfaces and disorder in the layers. Spin pumping across an interface with spin-orbit coupling and the attendant backflow are treated on an equal footing. We resolve some long-standing issues on the conflicting conclusions about the spin-diffusion length for Pt, and the origin of spin-memory loss at interfaces with heavy metals. In addition, we predict some heretofore unanticipated spin-pumping phenomena.

Original languageEnglish (US)
Article number126602
JournalPhysical review letters
Volume114
Issue number12
DOIs
StatePublished - Mar 26 2015

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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