Time-domain observation of the spinmotive force in Permalloy nanowires

Masamitsu Hayashi*, Jun'Ichi Ieda, Yuta Yamane, Jun Ichiro Ohe, Yukiko K. Takahashi, Seiji Mitani, Sadamichi Maekawa

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)

Abstract

The spinmotive force associated with a moving domain wall is observed directly in Permalloy nanowires using real time voltage measurements with proper subtraction of the electromotive force. Whereas the wall velocity exhibits nonlinear dependence on magnetic field, the generated voltage increases linearly with the field. We show that the sign of the voltage reverses when the wall propagation direction is altered. Numerical simulations explain quantitatively these features of spinmotive force and indicate that it scales with the field even in a field range where the wall motion is no longer associated with periodic angular rotation of the wall magnetization.

Original languageEnglish
Article number147202
JournalPhysical Review Letters
Volume108
Issue number14
DOIs
Publication statusPublished - 2012 Apr 5
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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