標題: | EXCHANGE INTERACTION IN DILUTED MAGNETIC SEMICONDUCTORS - CRYSTAL-STRUCTURE-INDUCED ANISOTROPY |
作者: | YU, SS LEE, VC 光電工程研究所 Institute of EO Enginerring |
公開日期: | 15-八月-1995 |
摘要: | In this paper, we employ the model developed by Larson et al. to calculate the exchange interaction between magnetic ions in diluted magnetic semiconductors in a method that incorporates explicitly the intrinsic symmetry of the host crystals. We find that the symmetry of the wave function, and thus the interaction matrix element, could induce strong directional dependence of the exchange interaction despite the fact that superexchange is mediated via virtual excitations near the center of the Brillouin zone, where the band energy is essentially isotropic. |
URI: | http://dx.doi.org/10.1103/PhysRevB.52.4647 http://hdl.handle.net/11536/1780 |
ISSN: | 0163-1829 |
DOI: | 10.1103/PhysRevB.52.4647 |
期刊: | PHYSICAL REVIEW B |
Volume: | 52 |
Issue: | 7 |
起始頁: | 4647 |
結束頁: | 4650 |
顯示於類別: | 期刊論文 |