Spin Seebeck Effect: Sensitive Probe for Elementary Excitation, Spin Correlation, Transport, Magnetic Order, and Domains in Solids

The spin Seebeck effect (SSE) refers to the generation of a current as result temperature gradient in magnetic material, which can be detected electrically via inverse Hall metallic contact. Since discovery SSE 2008, intensive studies on have been conducted elucidate its origin. SSEs appear wide range materials including ferro-, ferri-, and antiferro-magnets also paramagnets with classical or quantum fluctuation. voltage reflects fundamental properties magnet, such elementary excitation, static order, correlation, transport. In this article, we review recent progress various systems, particular emphasis emerging role probe these solids. We briefly discuss recently-discovered nuclear SSE.