Mechanical generation of spin current by spin-rotation coupling

Mamoru Matsuo, Jun'Ichi Ieda, Kazuya Harii, Eiji Saitoh, Sadamichi Maekawa

Research output: Contribution to journalArticlepeer-review

69 Citations (Scopus)

Abstract

Spin-rotation coupling, which is responsible for angular momentum conversion between the electron spin and rotational deformations of elastic media, is exploited for generating spin current. This method requires neither magnetic moments nor spin-orbit interaction. The spin current generated in nonmagnets is calculated in the presence of surface acoustic waves. We solve the spin diffusion equation, extended to include spin-rotation coupling, and find that larger spin currents can be obtained in materials with longer spin lifetimes. Spin accumulation induced on the surface is predicted to be detectable by time-resolved Kerr spectroscopy.

Original languageEnglish
Article number180402
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume87
Issue number18
DOIs
Publication statusPublished - 2013 May 14

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Mechanical generation of spin current by spin-rotation coupling'. Together they form a unique fingerprint.

Cite this