A complete set of the generalized drift-diffusion equations for a coupled charge and spin dynamics in ferromagnets in the presence of extrinsic spin-orbit coupling is derived from the quantum kinetic approach, covering major transport phenomena, such as the spin and anomalous Hall effects, spin swapping, spin precession, and relaxation processes. We argue that the spin swapping effect in ferromagnets is enhanced due to spin polarization, while the overall spin texture induced by the interplay of spin-orbital and spin precession effects displays a complex spatial dependence that can be exploited to generate torques and nucleate or propagate domain walls in centrosymmetric geometries without the use of external polarizers, as opposed to the conventional understanding of spin-orbit mediated torques.
Bibliographical noteFunding Information:
A. M and C. O. P were supported by King Abdullah University and Technology (KAUST). M. C. and S. A. N. were supported by the program “Emergence et partenariat stratégique” at the Univ. Grenoble Alpes. S. A. N. acknowledges support from PRESTIGE Postdoctoral Fellowship Programme, cofunded by the European Union. S. A. N. acknowledges support from the Act 211 Government of the Russian Federation, Contract No. 02.A03.21.0006.
© 2018 American Physical Society.
ASJC Scopus subject areas
- Physics and Astronomy(all)