Evidence for the constancy of U in the Mott transition of V2O3

Physical review. B, Condensed matter (Impact Factor: 3.66). 08/2009; 84(7). DOI: 10.1103/PhysRevB.84.075117
Source: arXiv


We have performed high-resolution hard X-ray photoemission spectroscopy for the metal-insulator transition (MIT) system (V(1-x)Cr(x))2O3 in the paramagnetic metal, paramagnetic insulator and antiferromagentic insulator phases. The quality of the spectra enables us to conclude that the on-site Coulomb energy U does not change through the MIT, which eliminate all but one theoretical MIT scenario in this paradigm material. Comment: 4 pages, 3 figures

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