Charge density of semiconductors in the GW approximation

M M Rieger; R W Godby

Charge density of semiconductors in the GW approximation

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

We present a method to calculate the electronic charge density of periodic solids in the GW approximation, using the space-time approach. We investigate, for the examples of silicon and germanium, to what extent the GW approximation is charge conserving and how the charge density compares with experimental values. We find that the GW charge density is close to experiment and charge is practically conserved. We also discuss how using a Hartree potential consistent with the level of approximation affects the quasiparticle energies and find that the common simplification of using the local-density approximation Hartree potential is very well justified. [S0163-1829(98)03427-4].

Original language	English
Pages (from-to)	1343-1348
Number of pages	6
Journal	Physical Review B
Volume	58
Issue number	3
Publication status	Published - 15 Jul 1998

Keywords

PARTICLE BAND-STRUCTURE
GERMANIUM
SILICON
GAAS
SI
GE

Cite this

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title = "Charge density of semiconductors in the GW approximation",

abstract = "We present a method to calculate the electronic charge density of periodic solids in the GW approximation, using the space-time approach. We investigate, for the examples of silicon and germanium, to what extent the GW approximation is charge conserving and how the charge density compares with experimental values. We find that the GW charge density is close to experiment and charge is practically conserved. We also discuss how using a Hartree potential consistent with the level of approximation affects the quasiparticle energies and find that the common simplification of using the local-density approximation Hartree potential is very well justified. [S0163-1829(98)03427-4].",

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T1 - Charge density of semiconductors in the GW approximation

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AU - Godby, R W

PY - 1998/7/15

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N2 - We present a method to calculate the electronic charge density of periodic solids in the GW approximation, using the space-time approach. We investigate, for the examples of silicon and germanium, to what extent the GW approximation is charge conserving and how the charge density compares with experimental values. We find that the GW charge density is close to experiment and charge is practically conserved. We also discuss how using a Hartree potential consistent with the level of approximation affects the quasiparticle energies and find that the common simplification of using the local-density approximation Hartree potential is very well justified. [S0163-1829(98)03427-4].

AB - We present a method to calculate the electronic charge density of periodic solids in the GW approximation, using the space-time approach. We investigate, for the examples of silicon and germanium, to what extent the GW approximation is charge conserving and how the charge density compares with experimental values. We find that the GW charge density is close to experiment and charge is practically conserved. We also discuss how using a Hartree potential consistent with the level of approximation affects the quasiparticle energies and find that the common simplification of using the local-density approximation Hartree potential is very well justified. [S0163-1829(98)03427-4].

KW - PARTICLE BAND-STRUCTURE

KW - GERMANIUM

KW - SILICON

KW - GAAS

KW - SI

KW - GE

M3 - Article

SN - 2469-9950

VL - 58

SP - 1343

EP - 1348

JO - Physical Review B

JF - Physical Review B

IS - 3

ER -