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  Hybrid density functional theory meets quasiparticle calculations: A consistent electronic structure approach

Atalla, V., Yoon, M., Caruso, F., Rinke, P., & Scheffler, M. (2013). Hybrid density functional theory meets quasiparticle calculations: A consistent electronic structure approach. Physical Review B, 88(16): 165122. doi:10.1103/PhysRevB.88.165122.

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PhysRevB.88.165122.pdf (Verlagsversion), 405KB
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2013
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APS
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 Urheber:
Atalla, Viktor1, Autor           
Yoon, Mina2, Autor
Caruso, Fabio, Autor
Rinke, Patrick, Autor
Scheffler, Matthias, Autor
Affiliations:
1Theory, Fritz Haber Institute, Max Planck Society, ou_634547              
2Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA, ou_persistent22              

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 Zusammenfassung: We propose a scheme to obtain a system-dependent fraction of exact exchange (α) within the framework of hybrid density functional theory (DFT) that is consistent with the G0W0 approach, where G0 is the noninteracting Green function of the system and W0 the screened Coulomb interaction. We exploit the formally exact condition of exact DFT that the energy of the highest occupied molecular orbital corresponds to the ionization potential of a finite system. We identify the optimal α value for which this statement is obeyed as closely as possible and thereby remove the starting point dependence from the G0W0 method. This combined approach is essential for describing electron transfer (as exemplified by the TTF/TCNQ dimer) and yields the vertical ionization potentials of the G2 benchmark set with a mean absolute percentage error of only ≈3%.

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Sprache(n): eng - English
 Datum: 2013-06-112013-05-082013-10-142013-10-14
 Publikationsstatus: Erschienen
 Seiten: 8
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1103/PhysRevB.88.165122
 Art des Abschluß: -

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Titel: Physical Review B
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Woodbury, NY : Published by the American Physical Society through the American Institute of Physics
Seiten: - Band / Heft: 88 (16) Artikelnummer: 165122 Start- / Endseite: - Identifikator: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008