Spin-transfer-torque-assisted magnetization reversal in spin-valve strips using the spin-pumping effect

Mao Takahashi, Yukio Nozaki

Research output: Contribution to journalArticle

Abstract

The modulation of a switching field by a spin-transfer torque generated by the spin-pumping effect is demonstrated in spin-valve strips. A spin current pumped into a spin valve prefers an antiparallel configuration of magnetization, so that the hysteresis loop of a soft magnetic layer is shifted by applying an alternating-current magnetic field with a frequency that matched the resonant condition of a hard magnetic layer. Furthermore, we confirmed that an alternating spin current generated by the spin pumping in the hard magnetic layer produces an orthogonal magnetic torque that can reduce the coercive field of the soft magnetic layer.

Original languageEnglish
Article number063002
JournalApplied Physics Express
Volume9
Issue number6
DOIs
Publication statusPublished - 2016 Jun 1

Fingerprint

Magnetization reversal
torque
strip
pumping
Torque
magnetization
Hysteresis loops
Magnetization
Modulation
Magnetic fields
alternating current
hysteresis
modulation
configurations
magnetic fields

ASJC Scopus subject areas

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

Cite this

Spin-transfer-torque-assisted magnetization reversal in spin-valve strips using the spin-pumping effect. / Takahashi, Mao; Nozaki, Yukio.

In: Applied Physics Express, Vol. 9, No. 6, 063002, 01.06.2016.

Research output: Contribution to journalArticle

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