Searched for: collection%3Air
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Uchida, K. (author), Ota, T. (author), Adachi, H. (author), Xiao, J. (author), Nonaka, T. (author), Kajiwara, Y. (author), Bauer, G.E.W. (author), Maekawa, S. (author), Saitoh, E. (author)
The spin-Seebeck effect (SSE) in ferromagnetic metals and insulators has been investigated systematically by means of the inverse spin-Hall effect (ISHE) in paramagnetic metals. The SSE generates a spin voltage as a result of a temperature gradient in a ferromagnet, which injects a spin current into an attached paramagnetic metal. In the...
journal article 2012
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Bandopadyay, S. (author), Brataas, A. (author), Bauer, G.E.W. (author)
The miniaturization of magnetic read heads and random access memory elements makes them vulnerable to thermal fluctuations. We demonstrate how current-induced spin-transfer torques can be used to suppress the effects of thermal fluctuations. This enhances the fidelity of perpendicular magnetic spin valves. The simplest realization is a dc to...
journal article 2011
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Foros, J. (author), Brataas, A. (author), Tserkovnyak, Y. (author), Bauer, G.E.W. (author)
In the presence of spatial variation in the magnetization direction, electric current noise causes a fluctuating spin-transfer torque that increases the fluctuations of the ferromagnetic order parameter. By the fluctuationdissipation theorem, the fluctuations at thermal equilibrium are related to the viscous magnetization damping, which in...
journal article 2008
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Xiao, J. (author), Bauer, G.E.W. (author), Brataas, A. (author)
We study the bias-dependent spin-transfer torque in magnetic tunnel junctions in the Stoner model by scattering theory. We show that the in-plane (Slonczewski type) torque vanishes and subsequently reverses its direction when the bias voltage becomes larger or the barrier wider than material and device-dependent critical values. We are able to...
journal article 2008
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