Journal
PHYSICAL REVIEW LETTERS
Volume 114, Issue 11, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.114.116402
Keywords
-
Categories
Funding
- ANR [NT09-610745]
- GENCI [544]
- Italian Ministry of Research through the project PRIN 'Interfacce di ossidi: nuove proprieta emergenti, multifunzionalita e dispositivi per l'elettronica e l'energia (OXIDE)'
Ask authors/readers for more resources
The effects of electron interaction on spectral properties can be understood in terms of coupling between excitations. In transition-metal oxides, the spectral function close to the Fermi level and low-energy excitations between d states have attracted particular attention. In this work we focus on photoemission spectra of vanadium dioxide over a wide (10 eV) range of binding energies. We show that there are clear signatures of the metal-insulator transition over the whole range due to a cross coupling of the delocalized s and p states with low-energy excitations between the localized d states. This coupling can be understood by advanced calculations based on many-body perturbation theory in the GW approximation. We also advocate the fact that tuning the photon energy up to the hard-x-ray range can help to distinguish fingerprints of correlation from pure band-structure effects.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available