Electronic structures and the estimated Curie temperatures of (Ga1−yIny)1−xMnxAs

• Published in: Applied physics letters Vol. 83; no. 26; pp. 5491 - 5493
• Main Authors: Miura, K., Iwasawa, M., Imanaga, S., Ami, T.
• Format: Journal Article
• Language: English
• Published: 29-12-2003
• ISSN: 0003-6951; 1077-3118
• DOI: 10.1063/1.1638632

The electronic structures of (Ga1−yIny)1−xMnxAs have been investigated using the Korringa, Kohn and Rostoker (KKR) method with the coherent potential approximation (CPA). The estimated Curie temperature (TC) of Ga1−xMnxAs is higher than that of (Ga0.5In0.5)1−xMnxAs and In1−xMnxAs when x≲0.10. On the other hand, the estimated TC of Ga1−xMnxAs saturates with an increase of x when x≳0.05, but that of (Ga0.5In0.5)1−xMnxAs and In1−xMnxAs does not saturate even when x>0.10. These results are in good agreement with the previous experimental results. Our calculated results predict that the TC of (Ga0.5In0.5)1−xMnxAs and In1−xMnxAs will be higher than that of Ga1−xMnxAs when x≳0.10.