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@ARTICLE{Liebsch:18489,
author = {Liebsch, A.},
title = {{H}igh-energy pseudogap induced by {H}und coupling in a
degenerate {H}ubbard model},
journal = {Physical review / B},
volume = {84},
number = {18},
issn = {1098-0121},
address = {College Park, Md.},
publisher = {APS},
reportid = {PreJuSER-18489},
pages = {180505},
year = {2011},
note = {Record converted from VDB: 12.11.2012},
abstract = {Hund coupling in the degenerate five-band Hubbard model
near n = 6 occupancy is shown to give rise to a significant
depletion of spectral weight above the Fermi level.
Calculations within dynamical mean-field theory combined
with exact diagonalization reveal that this pseudogap is
associated with a collective mode in the self-energy caused
by spin fluctuations. The pseudogap is remarkably stable
over a wide range of Coulomb and exchange energies, but
disappears for weak Hund coupling. The implications of this
phenomenon for optical spectra of iron pnictides are
discussed.},
keywords = {J (WoSType)},
cin = {IAS-1 / PGI-1},
ddc = {530},
cid = {I:(DE-Juel1)IAS-1-20090406 / I:(DE-Juel1)PGI-1-20110106},
pnm = {Grundlagen für zukünftige Informationstechnologien},
pid = {G:(DE-Juel1)FUEK412},
shelfmark = {Physics, Condensed Matter},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000296911600002},
doi = {10.1103/PhysRevB.84.180505},
url = {https://juser.fz-juelich.de/record/18489},
}