Linear-response theory of spin Seebeck effect in ferromagnetic insulators

Hiroto Adachi; Jun-ichiro Ohe; Saburo Takahashi; Sadamichi Maekawa

doi:10.1103/physrevb.83.094410

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arXiv · 1010.2325

Linear-response theory of spin Seebeck effect in ferromagnetic insulators

Hiroto Adachi·Jun-ichiro Ohe·Saburo Takahashi·Sadamichi Maekawa

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Abstract

We formulate a linear response theory of the spin Seebeck effect, i.e., a spin voltage generation from heat current flowing in a ferromagnet. Our approach focuses on the collective magnetic excitation of spins, i.e., magnons. We show that the linear-response formulation provides us with a qualitative as well as quantitative understanding of the spin Seebeck effect observed in a prototypical magnet, yttrium iron garnet.

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Hiroto Adachi, Jun-ichiro Ohe, Saburo Takahashi, Sadamichi Maekawa. 2011-03-30. Linear-response theory of spin Seebeck effect in ferromagnetic insulators. https://doi.org/10.1103/physrevb.83.094410

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