We have measured bulk sensitive photoemission spectra of pure vanadium sesquioxide (V2O3) in its metallic phase as a function of different surface preparations. We observe the presence of a clear coherent peak in the vicinity of the Fermi level and of satellites intensities at the V 2p core level. After scraping, the coherent intensities are almost completely suppressed in both core level and valence band. Our results suggest a remarkable change of the screening properties in strongly correlated systems when going from the surface to the volume.
Bulk electronic properties of V2O3 probed by hard X-ray photoelectron spectroscopy / Panaccione, G., Sacchi, M., Torelli, P., Offi, F., Cautero, G., Sergo, R., Fondacaro, A., Henriquet, C., Huotari, S., Monaco, G.. - In: JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA. - ISSN 0368-2048. - (2007), pp. 64-67.
Bulk electronic properties of V2O3 probed by hard X-ray photoelectron spectroscopy
CAUTERO, GIUSEPPE;
2007-01-01
Abstract
We have measured bulk sensitive photoemission spectra of pure vanadium sesquioxide (V2O3) in its metallic phase as a function of different surface preparations. We observe the presence of a clear coherent peak in the vicinity of the Fermi level and of satellites intensities at the V 2p core level. After scraping, the coherent intensities are almost completely suppressed in both core level and valence band. Our results suggest a remarkable change of the screening properties in strongly correlated systems when going from the surface to the volume.Pubblicazioni consigliate
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