Ado I A, Dmitriev I A, Ostrovsky P M, Titov M
Radboud University, Institute for Molecules and Materials, NL-6525 AJ Nijmegen, Netherlands.
Max Planck Institute for Solid State Research, Heisenbergstr. 1, 70569 Stuttgart, Germany.
Phys Rev Lett. 2016 Jul 22;117(4):046601. doi: 10.1103/PhysRevLett.117.046601. Epub 2016 Jul 20.
Skew scattering on rare impurity configurations is shown to dominate the anomalous Hall effect in a 2D Rashba ferromagnet. The mechanism originates in scattering on rare impurity pairs separated by distances of the order of the Fermi wavelength. The corresponding theoretical description goes beyond the conventional noncrossing approximation. The mechanism provides the only contribution to the anomalous Hall conductivity in the most relevant metallic regime and strongly modifies previously obtained results for lower energies in the leading order with respect to impurity strength.
