title: Current-induced transverse spin-wave instability in a thin nanomagnet.
abstract: We show that an unpolarized electric current incident perpendicular to the plane of a thin ferromagnet can excite a spin-wave instability transverse to the current direction if source and drain contacts are not symmetric. The instability, which is driven by the current-induced "spin-transfer torque," exists for one current direction only.
authors.affiliation: Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, New York 14853, USA.
authors.forename: M L
authors.initials: ML
authors.lastname: Polianski
authors.forename: P W
authors.initials: PW
authors.lastname: Brouwer