Spin transfer torque in lateral spin-valve structure evaluated from field-excited ferromagnetic resonant linewidth

Yukio Nozaki, Sho D. Watanabe, Takafumi Kobayashi, Tomoki Tanazawa

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Modulation of ferromagnetic resonance (FMR) linewidth owing to a spin transfer torque (STT) caused by the absorption of a pure spin current in a permalloy nanowire is demonstrated. To exclude the STT induced by the spin-polarized current, the pure spin current was produced using a lateral spin-valve structure. Self-homodyne FMR detection without applying an external sense current was used for minimizing the influence of Joule heating on the FMR linewidth. The linear variation of the FMR linewidth caused by the STT was clearly observed when the electrical current generating the pure spin current was below 1 mA.

Original languageEnglish
Article number043001
JournalApplied Physics Express
Volume8
Issue number4
DOIs
Publication statusPublished - 2015 Apr 1

Fingerprint

Ferromagnetic resonance
Linewidth
torque
Torque
ferromagnetic resonance
Joule heating
Nanowires
Modulation
Permalloys (trademark)
nanowires
modulation

ASJC Scopus subject areas

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

Cite this

Spin transfer torque in lateral spin-valve structure evaluated from field-excited ferromagnetic resonant linewidth. / Nozaki, Yukio; Watanabe, Sho D.; Kobayashi, Takafumi; Tanazawa, Tomoki.

In: Applied Physics Express, Vol. 8, No. 4, 043001, 01.04.2015.

Research output: Contribution to journalArticle

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