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SELF-ENERGY EFFECTS IN THE UNOCCUPIED AND OCCUPIED ELECTRONIC STRUCTURE OF Cu

Author

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  • V. N. STROCOV

    (Department of Physics, Chalmers University of Technology and Göteborg University, SE-41296 Göteborg, Sweden;
    Experimentalphysik II, Universität Augsburg, D-86135 Augsburg, Germany)

  • P. O. NILSSON

    (Department of Physics, Chalmers University of Technology and Göteborg University, SE-41296 Göteborg, Sweden)

  • R. CLAESSEN

    (Experimentalphysik II, Universität Augsburg, D-86135 Augsburg, Germany)

  • F. ARYASETIAWAN

    (Research Institute for Computational Sciences, AIST, Tsukuba Central 2, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan)

  • P. BLAHA

    (Institut für Physikalische und Theoretische Chemie, Technische Universität Wien, A-1060 Wien, Austria)

  • J.-M. THEMLIN

    (Groupe de Physique des Etats Condensés, Faculté des Sciences de Luminy, Case 901, 13288 Marseille Cedex 9, France)

  • G. NICOLAY

    (Fachrichtung Experimentalphysik, Universität des Saarlandes, D-66041 Saarbrücken, Germany)

  • S. HÜFNER

    (Fachrichtung Experimentalphysik, Universität des Saarlandes, D-66041 Saarbrücken, Germany)

Abstract

We report on self-energy effects in the electronic structure of Cu as a prototype weakly correlated system containing electron states of different localization. The unoccupied and occupied excited states were mapped fully resolved in the three-dimensionalkusing very-low-energy electron diffraction and photoemission, respectively. The self-energy corrections to the density-functional theory show distinct band- andk-dependence. These results are well described by quasiparticle GW calculations, especially for less localized states. We find correlation of the self-energy effects with spatial overlap of the one-electron wave function with the electron density, and elucidate the essential physics of this effect based on the electron-gas exchange correlation behavior.

Suggested Citation

  • V. N. Strocov & P. O. Nilsson & R. Claessen & F. Aryasetiawan & P. Blaha & J.-M. Themlin & G. Nicolay & S. Hüfner, 2002. "SELF-ENERGY EFFECTS IN THE UNOCCUPIED AND OCCUPIED ELECTRONIC STRUCTURE OF Cu," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 9(02), pages 1281-1285.
    • Handle: RePEc:wsi:srlxxx:v:09:y:2002:i:02:n:s0218625x02003706
    DOI: 10.1142/S0218625X02003706
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