標題: EXCHANGE INTERACTION IN DILUTED MAGNETIC SEMICONDUCTORS - CRYSTAL-STRUCTURE-INDUCED ANISOTROPY
作者: YU, SS
LEE, VC
光電工程學系
Department of Photonics
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