title: Origin of magnetic circular dichroism in GaMnAs: giant zeeman splitting versus spin dependent density of states.
abstract: 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.
authors: Department of Physics and Astronomy, University of British Columbia, Vancouver, BC, V6T 1Z1, Canada.
authors: M
authors: M
authors: Berciu
authors: R
authors: R
authors: Chakarvorty
authors: Y Y
authors: YY
authors: Zhou
authors: M T
authors: MT
authors: Alam
authors: K
authors: K
authors: Traudt
authors: R
authors: R
authors: Jakiela
authors: A
authors: A
authors: Barcz
authors: T
authors: T
authors: Wojtowicz
authors: X
authors: X
authors: Liu
authors: J K
authors: JK
authors: Furdyna
authors: M
authors: M
authors: Dobrowolska