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Current-driven microwave oscillations in current perpendicular-to-plane spin-valve nanopillars

Q. Mistral, Joo-Von Kim, T. Devolder, P. Crozat, C. Chappert, J. A. Katine, M. J. Carey, K. Ito

cond-mat.mtrl-sciarXiv:cond-mat/0603293

Abstract

We study the current and temperature dependences of the microwave voltage emission of spin-valve nanopillars subjected to an in-plane magnetic field and a perpendicular-to-plane current. Despite the complex multilayer geometry, clear microwave emission is shown to be possible and spectral lines as narrow as 3.8 MHz (at 150 K) are observed.

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