Home
For authors
Submission status

Archive
Archive (English)
Current
   Volumes 113-119
   Volumes 93-112
      Volume 112
      Volume 111
      Volume 110
      Volume 109
      Volume 108
      Volume 107
      Volume 106
      Volume 105
      Volume 104
      Volume 103
      Volume 102
      Volume 101
      Volume 100
      Volume 99
      Volume 98
      Volume 97
      Volume 96
      Volume 95
      Volume 94
      Volume 93
Search
VOLUME 93 (2011) | ISSUE 2 | PAGE 83
Role of electronic correlations in the Fermi surface formation of NaxCoO2
Abstract
Band structure of metallic sodium cobaltate NaxCO2 (x=0.33, 0.48, 0.61 0.72) has been investigated by local density approximation+Hubbard U (LDA+U) method and within Gutzwiller approximation for the Co-t2g manifold. Correlation effects being taken into account results in suppression of the e'g hole pockets at the Fermi surface in agreement with recent angle-resolved photo-emission spectroscopy (ARPES) experiments. In the Gutzwiller approximation the bilayer splitting is significantly reduced due to the correlation effects. The formation of high spin (HS) state in Co d-shell was shown to be very improbable.