%0 Journal Article
%T Microscopic Theory of Rashba Interaction in Magnetic Metal
%A Jin-Hong Park
%A Choong H. Kim
%A Hyun-Woo Lee
%A Jung Hoon Han
%J Physics
%D 2012
%I arXiv
%R 10.1103/PhysRevB.87.041301
%X Theory of Rashba spin-orbit coupling in magnetic metals is worked out from microscopic Hamiltonian describing d-orbitals. When structural inversion symmetry is broken, electron hopping between $d$-orbitals generates chiral ordering of orbital angular momentum, which combines with atomic spin-orbit coupling to result in the Rashba interaction. Rashba parameter characterizing the interaction is band-specific, even reversing its sign from band to band. Large enhancement of the Rashba parameter found in recent experiments is attributed to the orbital mixing of 3d magnetic atoms with non-magnetic heavy elements as we demonstrate by first-principles and tight-binding calculations.
%U http://arxiv.org/abs/1207.0089v1