TY  - JOUR
AU  - Liebsch, A.
AU  - Ishida, H.
TI  - Coulomb correlations do not fill the e'_g hole pockets in Na_{0.3}CoO_2
JO  - The European physical journal / B
VL  - 61
SN  - 1434-6028
CY  - Berlin
PB  - Springer
M1  - PreJuSER-2332
SP  - 405
PY  - 2008
N1  - Record converted from VDB: 12.11.2012
AB  - There exists presently considerable debate over the question whether local Coulomb interactions can explain the absence of the small e'(g) Fermi surface hole pockets in photoemission studies of Na0.3CoO2. By comparing dynamical mean field results for different single particle Hamiltonians and exact diagonalization as well as quantum Monte Carlo treatments, we show that, for realistic values of the Coulomb energy U and Hund exchange J, the e'(g) pockets can be slightly enhanced or reduced compared to band structure predictions, but they do not disappear.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000253977000003
DO  - DOI:10.1140/epjb/e2008-00108-y
UR  - https://juser.fz-juelich.de/record/2332
ER  -