Calculation of magnon drag force induced by an electric current in ferromagnetic metals

Abstract

Magnon drag effect induced by an applied electric field in ferromagnetic metals is theoretically studied by a microscopic calculation of the force on magnons arising from magnon emission/absorption and scattering due to driven electrons. It is shown that magnon scattering contribution dominates over the emission/absorption one in a wide temperature regime in good metals with long elastic lifetime $\taue$, as the latter has a relative suppression factor of $(\Deltasd\taue)^{-2}$ due to the electron spin flip by the magnon, where $\Deltasd$ is the $sd$ exchange interaction energy. Spin-transfer efficiency is discussed including the magnon drag effect.

References in corpus (6)

• Spin Seebeck insulator
• Microscopic approach to current-driven domain wall dynamics
• Magnon-drag thermopile
• Microscopic Theory of Magnon-Drag Thermoelectric Transport in Ferromagnetic Metals
• Vorticity-induced anomalous Hall effect in electron fluid
• Hydrodynamic theory of chiral angular momentum generation in metals

Cited by in corpus (2)

• The magnon mediated plasmon friction: a functional integral approach
• Phonon and magnon jets above the critical current in nanowires with planar domain walls