TY  - JOUR
AU  - Ishida, H.
AU  - Johannes, M.
AU  - Liebsch, A.
TI  - Effect of dynamical Coulomb correlations on the Fermi surface of Na_0.3CoO_2
JO  - Physical review letters
VL  - 94
SN  - 0031-9007
CY  - College Park, Md.
PB  - APS
M1  - PreJuSER-48850
SP  - 196401
PY  - 2005
N1  - Record converted from VDB: 12.11.2012
AB  - The t(2g) quasiparticle spectra of Na0.3CoO2 are calculated within the dynamical mean field theory. It is shown that as a result of dynamical Coulomb correlations charge is transferred from the nearly filled e(g)(') subbands to the a(1g) band, thereby reducing orbital polarization among Co t(2g) states. Dynamical correlations therefore stabilize the small e(g)(') Fermi surface pockets, in contrast to angle-resolved photoemission data, which do not reveal these pockets.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000229277000039
DO  - DOI:10.1103/PhysRevLett.94.196401
UR  - https://juser.fz-juelich.de/record/48850
ER  -