title: Influence of current on field-driven domain wall motion in permalloy nanowires from time resolved measurements of anisotropic magnetoresistance.
abstract: The motion of magnetic domain walls in permalloy nanowires is investigated by real-time resistance measurements. The domain wall velocity is measured as a function of the magnetic field in the presence of a current flowing through the nanowire. We show that the current can significantly increase or decrease the domain wall velocity, depending on its direction. These results are understood within a one-dimensional model of the domain wall dynamics which includes the spin transfer torque.
authors.affiliation: IBM Almaden Research Center, San Jose, California, USA.
authors.forename: M
authors.initials: M
authors.lastname: Hayashi
authors.forename: L
authors.initials: L
authors.lastname: Thomas
authors.forename: Ya B
authors.initials: YB
authors.lastname: Bazaliy
authors.forename: C
authors.initials: C
authors.lastname: Rettner
authors.forename: R
authors.initials: R
authors.lastname: Moriya
authors.forename: X
authors.initials: X
authors.lastname: Jiang
authors.forename: S S P
authors.initials: SS
authors.lastname: Parkin