title: Time-domain observation of the spinmotive force in permalloy nanowires.
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.
authors.affiliation: National Institute for Materials Science, Tsukuba 305-0047, Japan. hayashi.masamitsu@nims.go.jp
authors.forename: Masamitsu
authors.initials: M
authors.lastname: Hayashi
authors.forename: Jun'ichi
authors.initials: J
authors.lastname: Ieda
authors.forename: Yuta
authors.initials: Y
authors.lastname: Yamane
authors.forename: Jun-ichiro
authors.initials: J
authors.lastname: Ohe
authors.forename: Yukiko K
authors.initials: YK
authors.lastname: Takahashi
authors.forename: Seiji
authors.initials: S
authors.lastname: Mitani
authors.forename: Sadamichi
authors.initials: S
authors.lastname: Maekawa