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arxiv: 0908.2870 · v2 · submitted 2009-08-20 · ❄️ cond-mat.str-el

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

H. Fujiwara , A. Sekiyama , S.-K. Mo , J. W. Allen , J. Yamaguchi , G. Funabashi , S. Imada , P. Metcalf
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A. Higashiya M. Yabashi K. Tamasaku T. Ishikawa S. Suga
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classification ❄️ cond-mat.str-el
keywords insulatorparamagnetictransitionantiferromagenticchangeconcludeconstancycoulomb
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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.

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