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”

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

9 Citations (Scopus)

Résumé

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.

langue originale	Anglais
Pages (de - à)	300-304
Nombre de pages	5
journal	Computational Materials Science
Volume	20
Numéro de publication	3-4
Les DOIs	https://doi.org/10.1016/S0927-0256(00)00186-5
état	Publié - 1 janv. 2001

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10.1016/S0927-0256(00)00186-5

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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.",

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AU - Pulci, Olivia

AU - Reining, Lucia

AU - Onida, Giovanni

AU - Del Sole, Rodolfo

AU - Bechstedt, Friedhelm

PY - 2001/1/1

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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

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VL - 20

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EP - 304

JO - Computational Materials Science

JF - Computational Materials Science

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ER -

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

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