Many-body effects on one-electron energies and wave functions in low-dimensional systems

Olivia Pulci; Lucia Reining; Giovanni Onida; Rodolfo Del Sole; Friedhelm Bechstedt

doi:10.1016/S0927-0256(00)00186-5

Many-body effects on one-electron energies and wave functions in low-dimensional systems

Olivia Pulci
, Lucia Reining
, Giovanni Onida
, Rodolfo Del Sole
, Friedhelm Bechstedt

Friedrich-Schiller University
Università di Milano-Bicocca
University of Rome “Tor Vergata”

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

9 Citations (Scopus)

Abstract

We have studied the quasiparticle (QP) wave functions and energies of the GaAs(1 1 0) surface and of the cluster Na₄ within Hedin's GW approximation. We found that the commonly accepted assumption that the Density Functional Theory (DFT)-Local Density Approximation (LDA) wave functions are a very good approximation for the true QP ones can be wrong. We analyze the effect of the resulting changes in the wave functions on the optical spectra.

Original language	English
Pages (from-to)	300-304
Number of pages	5
Journal	Computational Materials Science
Volume	20
Issue number	3-4
DOIs	https://doi.org/10.1016/S0927-0256(00)00186-5
Publication status	Published - 1 Jan 2001

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title = "Many-body effects on one-electron energies and wave functions in low-dimensional systems",

abstract = "We have studied the quasiparticle (QP) wave functions and energies of the GaAs(1 1 0) surface and of the cluster Na4 within Hedin's GW approximation. We found that the commonly accepted assumption that the Density Functional Theory (DFT)-Local Density Approximation (LDA) wave functions are a very good approximation for the true QP ones can be wrong. We analyze the effect of the resulting changes in the wave functions on the optical spectra.",

author = "Olivia Pulci and Lucia Reining and Giovanni Onida and \{Del Sole\}, Rodolfo and Friedhelm Bechstedt",

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T1 - Many-body effects on one-electron energies and wave functions in low-dimensional systems

AU - Pulci, Olivia

AU - Reining, Lucia

AU - Onida, Giovanni

AU - Del Sole, Rodolfo

AU - Bechstedt, Friedhelm

PY - 2001/1/1

Y1 - 2001/1/1

N2 - We have studied the quasiparticle (QP) wave functions and energies of the GaAs(1 1 0) surface and of the cluster Na4 within Hedin's GW approximation. We found that the commonly accepted assumption that the Density Functional Theory (DFT)-Local Density Approximation (LDA) wave functions are a very good approximation for the true QP ones can be wrong. We analyze the effect of the resulting changes in the wave functions on the optical spectra.

AB - We have studied the quasiparticle (QP) wave functions and energies of the GaAs(1 1 0) surface and of the cluster Na4 within Hedin's GW approximation. We found that the commonly accepted assumption that the Density Functional Theory (DFT)-Local Density Approximation (LDA) wave functions are a very good approximation for the true QP ones can be wrong. We analyze the effect of the resulting changes in the wave functions on the optical spectra.

U2 - 10.1016/S0927-0256(00)00186-5

DO - 10.1016/S0927-0256(00)00186-5

M3 - Article

AN - SCOPUS:0034916648

SN - 0927-0256

VL - 20

SP - 300

EP - 304

JO - Computational Materials Science

JF - Computational Materials Science

IS - 3-4

ER -

Many-body effects on one-electron energies and wave functions in low-dimensional systems

Abstract

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