Back to Search
Start Over
Unoccupied electronic states inNiS2−xSexacross the metal-insulator transition
- Source :
- Physical Review B. 57:6984-6988
- Publication Year :
- 1998
- Publisher :
- American Physical Society (APS), 1998.
-
Abstract
- We investigate the evolution of the electronic structure across the insulator-metal transition in NiS 2−x Se x with changing composition, but in the absence of any structural or magnetic changes. A comparison of the inverse photoemission spectra with band-structure calculations establishes the importance of correlation effects in these systems. Systematic changes in the spectral distribution establish the persistence of the upper Hubbard band well into the metallic regime, with the insulator-to-metal transition being driven by a transfer of spectral weight from the Hubbard band to states close to the Fermi energy.
- Subjects :
- Condensed Matter::Quantum Gases
Materials science
Spectral power distribution
Condensed matter physics
Inverse photoemission spectroscopy
Fermi energy
Electronic structure
Spectral line
Electronic states
Metal
visual_art
visual_art.visual_art_medium
Condensed Matter::Strongly Correlated Electrons
Metal–insulator transition
Subjects
Details
- ISSN :
- 10953795 and 01631829
- Volume :
- 57
- Database :
- OpenAIRE
- Journal :
- Physical Review B
- Accession number :
- edsair.doi...........f91ff9fddcbf0f458ed81358fc07ded3