Quasiparticle Electronic structure of Copper in the GW approximation

Details Quasiparticle Electronic structure of Copper in the GW approximation Quasiparticle Electronic structure of Copper in the GW approximation

2001-10-24

arxiv.org/abs/cond-mat/0110525v2

Phys. Rev. Lett 88, 016403 (2002).

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 2 figures embedded in the text. 3 footnotes modified and 1 reference added. Small modifications also in the text. Acc

Scientific paper

10.1103/PhysRevLett.88.016403

We show that the results of photoemission and inverse photoemission experiments on bulk copper can be quantitatively described within band-structure theory, with no evidence of effects beyond the single-quasiparticle approximation. The well known discrepancies between the experimental bandstructure and the Kohn-Sham eigenvalues of Density Functional Theory are almost completely corrected by self-energy effects. Exchange-correlation contributions to the self-energy arising from 3s and 3p core levels are shown to be crucial.

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