Evaluation of spin Hall angle and spin diffusion length by using spin current-induced ferromagnetic resonance

Kouta Kondou, Hiroaki Sukegawa, Seiji Mitani, Kazuhito Tsukagoshi, Shinya Kasai

Research output: Contribution to journalArticlepeer-review

107 Citations (Scopus)

Abstract

We experimentally demonstrate the thickness dependence of the spin current-induced ferromagnetic resonance in Ni 80Fe 20/ nonmagnetic (Pt,Pd) bilayer thin films. The spectrum shape depends on the Ni 80Fe 20 layer thickness, due to extrinsic excitation in addition to the spin Hall effect. Detailed analysis of the thickness dependence of the spectrum, both for Ni 80Fe 20 and nonmagnetic layers, provides the spin Hall angle (Pt: 0.022 ± 0.004, Pd. 0.008 ± 0.002) and spin diffusion length (Pt: 1.2 ± 0.06 nm, Pd. 2.0 ± 0.09 nm).

Original languageEnglish
Article number073002
JournalApplied Physics Express
Volume5
Issue number7
DOIs
Publication statusPublished - 2012 Jul
Externally publishedYes

ASJC Scopus subject areas

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

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