Abstract
A detailed investigation of , V, , and V metal is presented. The vanadium core lines in the x-ray photoelectron spectra are anomalously wide for and V. It is shown that this is a consequence of the narrow band in these materials and the relatively strong core-hole Coulomb interaction. The influence of electron correlation effects in the band on the core linewidths is discussed. The valence bands are compared to band-structure calculations and the difference in the band structure above and below the semiconductor-metal transition is discussed. The Auger results are discussed in terms of the partial density of states. It is found that there is a large amount of character in the region of the valence band. Also the average "on-site" Coulomb interaction of electrons is obtained from the Auger spectra and is discussed in terms of electron correlation effects.
- Received 1 December 1978
DOI:https://doi.org/10.1103/PhysRevB.20.1546
©1979 American Physical Society