%0 Journal Article
%T Origin of Magnetic Circular Dichroism in GaMnAs: Giant Zeeman Splitting versus Spin Dependent Density of States
%A M. Berciu
%A R. Chakarvorty
%A Y. Y. Zhou
%A M. T. Alam
%A K. Traudt
%A R. Jakiela
%A A. Barcz
%A T. Wojtowicz
%A X. Liu
%A J. K. Furdyna
%A M. Dobrowolska
%J Physics
%D 2012
%I arXiv
%R 10.1103/PhysRevLett.102.247202
%X We present a unified interpretation of experimentally observed magnetic circular dichroism (MCD) in the ferromagnetic semiconductor (Ga,Mn)As, based on theoretical arguments, which demonstrates that MCD in this material arises primarily from a difference in the density of spin-up and spin-down states in the valence band brought about by the presence of the Mn impurity band, rather than being primarily due to the Zeeman splitting of electronic states.
%U http://arxiv.org/abs/1203.1853v1