%0 Journal Article
%A Sato, K.
%A Dederichs, P. H.
%A Katayama-Yoshida, H.
%T Curie temperatures of III-V magnetic semiconductors calculated from first-principles
%J epl
%V 61
%@ 0295-5075
%C Les Ulis
%I EDP Sciences
%M PreJuSER-33616
%P 403 - 408
%D 2003
%Z Record converted from VDB: 12.11.2012
%X Curie temperatures of the diluted magnetic semiconductors (Ga, Mn) As, (Ga, Mn) N, (Ga, Cr) As and (Ga, Cr) N are evaluated from first principles. The electronic structure is calculated in the local spin density approximation by using the Korringa-Kohn-Rostoker method combined with the coherent potential approximation to describe the substitutional and spin disorder. From the total energy differences between the ferromagnetic state and the spin-glass state, realistic estimations of Curie temperatures are achieved by using a mapping on the Heisenberg model in the mean-field approximation. Effects of additional carrier doping treatments are also investigated. Very large Curie temperatures are obtained, lying above room temperature for ( Ga, Mn) N, ( Ga, Cr) As and ( Ga, Cr) N. Upon hole doping the Curie temperature of (Ga, Mn) N further increases, while (Ga, Mn) As shows a plateau behavior.
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000180638600018
%R 10.1209/epl/i2003-00191-8
%U https://juser.fz-juelich.de/record/33616