Determination of penetration depth of transverse spin current in ferromagnetic metals by spin pumping

Tomohiro Taniguchi, Satoshi Yakata, Hiroshi Imamura, Yasuo Ando

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

Spin pumping in nonmagnetic/ferromagnetic metal multilayers Is studied both theoretically and experimentally. We show that the line widths of the ferromagnetic resonance (FMR) spectrum depend on the thickness of the ferromagnetic metal layers, which must not be in resonance with the oscillating magnetic field. We also show that the penetration depths of the transverse spin current in ferromagnetic metals can be determined by analyzing the line widths of their FMR spectra. The obtained penetration depths in NiFe, CoFe, and CoFeB were 3.7, 2.5, and 12.0 nm, respectively.

Original languageEnglish
Pages (from-to)313021-313023
Number of pages3
JournalApplied Physics Express
Volume1
Issue number3
DOIs
Publication statusPublished - 2008 Mar 1

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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