Many-body effects on the electronic and optical properties of bulk GaP

被引:0
|
作者
Pulci, O
Palummo, M
Olevano, V
Onida, G
Reining, L
Del Sole, R
机构
[1] Univ Roma Tor Vergata, Dipartimento Fis, INFM, I-00133 Rome, Italy
[2] Ecole Polytech, CNRS, Solides Irradies Lab, CEA, F-91128 Palaiseau, France
关键词
D O I
10.1002/1521-396X(200112)188:4<1261::AID-PSSA1261>3.0.CO;2-1
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We present an ab-initio study of GaP bulk as a test case to show the importance of going beyond the single particle Density Functional Theory (DFT) scheme in the calculation of excited state properties. The inclusion of many-body effects within the GW approach for the determination of electronic gaps, and of excitonic effects in the calculations of the dielectric function, is discussed. Comparison with one-particle DFT results and with experimental data are presented.
引用
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页码:1261 / 1266
页数:6
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