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Spin-orbit coupling effect in (Ga,Mn)As films: Anisotropic exchange interactions and magnetocrystalline anisotropy

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Mankovsky, Sergey ; Polesya, Svitlana ; Bornemann, Sven ; Minar, Jan ; Hoffmann, F. ; Back, Christian ; Ebert, Hubert
Date of publication of this fulltext: 15 May 2012 12:35


The magnetocrystalline anisotropy (MCA) of (Ga,Mn)As films has been studied on the basis of ab initio electronic structure theory by performing magnetic torque calculations. An appreciable contribution to the in-plane uniaxial anisotropy can be attributed to an extended region adjacent to the surface. Calculations of the exchange tensor allow to ascribe a significant part to the MCA to the ...


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