Current-Induced Transverse Spin-Wave Instability in a Thin Nanomagnet

M. L. Polianski and P. W. Brouwer
Phys. Rev. Lett. 92, 026602 – Published 16 January 2004

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.

  • Figure
  • Figure
  • Received 2 April 2003

DOI:https://doi.org/10.1103/PhysRevLett.92.026602

©2004 American Physical Society

Authors & Affiliations

M. L. Polianski and P. W. Brouwer

  • Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, New York 14853, USA

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Issue

Vol. 92, Iss. 2 — 16 January 2004

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