TY  - JOUR
AU  - Sato, K.
AU  - Dederichs, P. H.
AU  - Katayama-Yoshida, H.
TI  - Curie temperatures of III-V magnetic semiconductors calculated from first-principles
JO  - epl
VL  - 61
SN  - 0295-5075
CY  - Les Ulis
PB  - EDP Sciences
M1  - PreJuSER-33616
SP  - 403 - 408
PY  - 2003
N1  - Record converted from VDB: 12.11.2012
AB  - 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.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000180638600018
DO  - DOI:10.1209/epl/i2003-00191-8
UR  - https://juser.fz-juelich.de/record/33616
ER  -