| Literature DB >> 18643622 |
Y Takeda1, M Kobayashi, T Okane, T Ohkochi, J Okamoto, Y Saitoh, K Kobayashi, H Yamagami, A Fujimori, A Tanaka, J Okabayashi, M Oshima, S Ohya, P N Hai, M Tanaka.
Abstract
The magnetic properties of as-grown Ga1-xMnxAs have been investigated by the systematic measurements of temperature and magnetic field dependent soft x-ray magnetic circular dichroism (XMCD). The intrinsic XMCD intensity at high temperatures obeys the Curie-Weiss law, but a residual spin magnetic moment appears already around 100 K, significantly above the Curie temperature (T_{C}), suggesting that short-range ferromagnetic correlations are developed above T_{C}. The present results also suggest that the antiferromagnetic interaction between the substitutional and interstitial Mn (Mn_{int}) ions exists and that the amount of the Mn_{int} affects T_{C}.Entities:
Year: 2008 PMID： 18643622 DOI： 10.1103/PhysRevLett.100.247202
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161