Origin of magnetic circular dichroism in GaMnAs: giant zeeman splitting versus spin dependent density of states.
نویسندگان
چکیده
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.
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ورودعنوان ژورنال:
- Physical review letters
دوره 102 24 شماره
صفحات -
تاریخ انتشار 2009