Effect of spin-conserving scattering on Gilbert damping in ferromagnetic semiconductors

Abstract

The Gilbert damping in ferromagnetic semiconductors is theoretically investigated based on the $s$-$d$ model. In contrast to the situation in metals, all the spin-conserving scattering in ferromagnetic semiconductors supplies an additional spin relaxation channel due to the momentum dependent effective magnetic field of the spin-orbit coupling, thereby modifies the Gilbert damping. In the presence of a pure spin current, we predict a new contribution due to the interplay of the anisotropic spin-orbit coupling and a pure spin current.

4 pages

References in corpus (4)

• Electrical Detection of Spin Transport in Lateral Ferromagnet-Semiconductor Devices
• Microscopic approach to current-driven domain wall dynamics
• Microscopic Calculation of Spin Torques in Disordered Ferromagnets
• Gauge Field Formulation of Adiabatic Spin Torques

Cited by in corpus (1)

• Existence of vertical spin stiffness in Landau-Lifshitz-Gilbert equation in ferromagnetic semiconductors