Abstract
The effect of electron correlation (EC) on the electronic structure in and is studied by examining the partial density of states (PDOS) of B and orbitals using the polarization dependence of x-ray emission and absorption spectra. The discrepancies between observed and calculated PDOS’s cannot be attributed to EC effects. The present results suggest that the EC effect is less than the experimental error which indirectly supports a scenario that electron-phonon interaction plays an essential role in the occurrence of superconductivity.
- Received 27 March 2003
DOI:https://doi.org/10.1103/PhysRevB.68.064515
©2003 American Physical Society