Time-Resolved Reversal of Spin-Transfer Switching in a Nanomagnet

R. H. Koch, J. A. Katine, and J. Z. Sun

Phys. Rev. Lett. 92, 088302 – Published 26 February 2004

Abstract

Time-resolved measurements of spin-transfer-induced (STI) magnetization reversal were made in current-perpendicular spin-valve nanomagnetic junctions subject to a pulsed current bias. These results can be understood within the framework of a Landau-Lifshitz-Gilbert equation that includes STI corrections and a Langevin random field for finite temperature. Comparison of these measurements with model calculations demonstrates that spin-transfer induced excitation is responsible for the observed magnetic reversal in these samples.

Received 12 June 2003

DOI:https://doi.org/10.1103/PhysRevLett.92.088302

Authors & Affiliations

R. H. Koch¹, J. A. Katine^2,*, and J. Z. Sun¹

¹IBM T. J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598, USA
²IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120, USA

^*Present address: Hitachi San Jose Research Center, 650 Harry Road, San Jose, CA 95120, USA.

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Issue

Vol. 92, Iss. 8 — 27 February 2004

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