Thermomagnonic spin transfer and Peltier effects in insulating magnets
Department of Physics and Astronomy, University of California - Riverside, CA 92521, USA
2 Department of Physics and Astronomy, University of California - Los Angeles, CA 90095, USA
Accepted: 8 February 2012
We study the coupled magnon energy transport and collective magnetization dynamics in ferromagnets with magnetic textures. By constructing a phenomenological theory based on irreversible thermodynamics, we describe the motion of domain walls by thermal gradients and the generation of heat flows by magnetization dynamics. From a microscopic description based on magnon kinetics, we estimate the transport coefficients and analyze the feasibility of energy-related applications in insulating ferromagnets, such as yttrium iron garnet and europium oxide.
PACS: 72.20.Pa – Thermoelectric and thermomagnetic effects / 75.30.Ds – Spin waves / 72.20.My – Galvanomagnetic and other magnetotransport effects
© EPLA, 2012