Quasiparticle effective-mass theory in semiconductors

被引:34
作者
Oshikiri, M
Aryasetiawan, F
Imanaka, Y
Kido, G
机构
[1] Natl Inst Mat Sci, Nanomat Lab, Tsukuba, Ibaraki 3050003, Japan
[2] Res Inst Computat Sci Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058568, Japan
关键词
D O I
10.1103/PhysRevB.66.125204
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A scheme for calculating quasiparticle effective masses beyond the standard local-density approximation is presented. Correlation effects beyond the local-density approximation are included in the form of self-energy correction which leads to two important correction factors. The first factor arises from the energy dependence of the self-energy resulting in renormalization of the quasiparticle and the second factor originates from the wave-vector dependence of the self-energy. We demonstrate the feasibility of our approach by calculating the effective masses of some wide-gap semiconductors AlN, GaN, ZnO, and artificial AlGaN2, well known for their technological importance. The obtained quasiparticle effective masses are in excellent agreement with available experimental data.
引用
收藏
页码:1252041 / 1252044
页数:4
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