This title appears in the Scientific Report :
2003
Please use the identifier:
http://dx.doi.org/10.1023/A:1023264113451 in citations.
Curie Temperatures of III-V Diluted Magnetic Semiconductors Calculated from First-Principles in Mean Field Approximation
Curie Temperatures of III-V Diluted Magnetic Semiconductors Calculated from First-Principles in Mean Field Approximation
Electronic structure and ferromagnetism in III-V compound-based diluted magnetic semiconductors (DMS) are investigated based on first-principles calculations by using the Korringa-Kohn-Rostoker method combined with the coherent-potential-approximation. The stability of the ferromagnetic phase in GaN...
Saved in:
Personal Name(s): | Sato, K. |
---|---|
Katayama-Yoshia, H. / Dederichs, P. H. | |
Contributing Institute: |
Theorie III; IFF-TH-III |
Published in: | Journal of superconductivity, 16 (2003) S. 31 - 36 |
Imprint: |
Dordrecht [u.a.]
Springer Science + Business Media B.V.
2003
|
Physical Description: |
31 - 36 |
DOI: |
10.1023/A:1023264113451 |
Document Type: |
Journal Article |
Research Program: |
Kondensierte Materie |
Series Title: |
Journal of Superconductivity
16 |
Subject (ZB): | |
Publikationsportal JuSER |
Electronic structure and ferromagnetism in III-V compound-based diluted magnetic semiconductors (DMS) are investigated based on first-principles calculations by using the Korringa-Kohn-Rostoker method combined with the coherent-potential-approximation. The stability of the ferromagnetic phase in GaN-, GaAs-, GaP-, GaSb- based DMS is investigated systematically. The calculations show that 3d-impurities from the first-half of the transition metal series favor the ferromagnetic state, while impurities from the latter-half of the series exhibit spin-glass behavior. This chemical trend in the magnetism is explained by the double exchange mechanism taking the local symmetry at the impurity gap states into account. Curie temperatures of GaAs- and GaN- based DMS are estimated by using the Heisenberg model in a mean field approximation with the parameters calculated from first-principles. It is suggested that room-temperature ferromagnetism can be realized in these systems. |