Thermo-Magneto-Electric Currents with Dynamical Magnetization Inhomogeneities

Abstract

We study the effect of potential and thermal gradient induced non-equilibrium magnetization in quasi 1-d itinerant magnets. A semi-phenomenological theory is employed in conjunction with the drift-diffusion model for this study. Using the methods of non-equilibrium thermodynamics, we derive the transport currents corresponding to charge, heat, and magnetization flows in the presence of non-equilibrium magnetization textures. It is shown how time-dependent magnetic textures give rise to charge and thermal currents even in the absence of external potential and thermal gradients through spin pumping. The presence of dynamical textures also affect the thermodynamic parameters of the system. As an application, we consider the case of a helimagnet.