Spin-wave excitation in magnetic insulator thin films by spin-transfer torque

Jiang Xiao, Yan Zhou, Gerrit E.W. Bauer

Research output: Chapter in Book/Report/Conference proceedingChapter

2 Citations (Scopus)

Abstract

We describe excitation of dipole-exchange spin waves in insulating magnetic thin films by spin-current injection at the surface of the film. An easy-axis magnetic surface anisotropy can induce a nonchiral surface spin-wave mode with penetration depth inversely proportional to the strength of the surface anisotropy, which strongly reduces the critical current and enhances the excitation power. The importance of the interface spin-wave modes on the excitation spectrum is reduced by spin pumping.

Original languageEnglish
Title of host publicationSolid State Physics - Advances in Research and Applications
PublisherAcademic Press Inc.
Pages29-51
Number of pages23
DOIs
Publication statusPublished - 2013

Publication series

NameSolid State Physics - Advances in Research and Applications
Volume64
ISSN (Print)0081-1947

Keywords

  • Magnetic insulator
  • Spin pumping
  • Spin wave
  • Spin-transfer torque
  • Surface anisotropy

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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