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arXiv · 1309.2164

Sub-microsecond fast temporal evolution of the spin Seebeck effect

M. Agrawal·V. I. Vasyuchka·A. A. Serga·A. Kirihara·P. Pirro·T. Langner·M. B. Jungfleisch·A. V. Chumak·E. Th. Papaioannou·B. Hillebrands
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Abstract

We present temporal evolution of the spin Seebeck effect in a YIG|Pt bilayer system. Our findings reveal that this effect is a sub-microseconds fast phenomenon governed by the temperature gradient and the thermal magnons diffusion in the magnetic materials. A comparison of experimental results with the thermal-driven magnon-diffusion model shows that the temporal behavior of this effect depends on the time development of the temperature gradient in the vicinity of the YIG|Pt interface. The effective thermal-magnon diffusion length for YIG|Pt systems is estimated to be around 700nm.

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M. Agrawal, V. I. Vasyuchka, A. A. Serga, A. Kirihara, P. Pirro, T. Langner, M. B. Jungfleisch, A. V. Chumak, E. Th. Papaioannou, B. Hillebrands. 2013-09-09. Sub-microsecond fast temporal evolution of the spin Seebeck effect. https://doi.org/10.1103/physrevb.89.224414

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