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 73
Evidence for strong Coulomb correlations in metallic phase of vanadium dioxide
Abstract
The influence of Coulomb correlation on magnetic and spectral properties in metallic rutile phase of vanadium dioxide is studied by state of the art LDA+DMFT method. Calculation results in strongly correlated metallic state with an effective mass renormalization m^*/m\approx2. Uniform magnetic susceptibility shows Curie-Weiss temperature dependence with effective magnetic moment, p eff theor = 1.54 μB, in a good agreement with the experimental value p_{\rm eff}^{\exp} = 1.53 \mu_B that is close to ideal value for V4+ ion with the spin S=1/2, peff = 1.73 μB. Calculated spectral function shows well developed Hubbard bands observable in the recent experimental photoemission spectra. We conclude that VO2 in rutile phase is strongly correlated metal with local magnetic moments formed by vanadium d-electrons.