Investigation of unoccupied electronic states of LaCoO$_3$ and PrCoO$_3$ using inverse photoemission spectroscopy and GGA + $U$ calculations

Details Investigation of unoccupied electronic states of LaCoO$_3$ and PrCoO$_3$ using inverse photoemission spectroscopy and GGA + $U$ calculations Investigation of unoccupied electronic states of LaCoO$_3$ and PrCoO$_3$ using inverse photoemission spectroscopy and GGA + $U$ calculations

2007-11-20

arxiv.org/abs/0711.3162v1

Phys. Rev. B 77, 113104 (2008)

Physics

Condensed Matter

Strongly Correlated Electrons

3 figures

Scientific paper

10.1103/PhysRevB.77.113104

The unoccupied electronic states of LaCoO$_3$ and PrCoO$_3$ are studied using room temperature inverse photoemission spectroscopy and \emph{ab initio} GGA+$\emph{U}$ band structure calculations. A fairly good agreement between experiment and theory is obtained. The intensity of the peak just above the Fermi-level is found to be very much sensitive to the hybridization of Co 3$d$ and O 2$p$ orbitals. Moreover, the band just above the Fermi-level is of Co 3$d$ character with little contribution from O 2$p$ states.

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