title: Inequivalent routes across the Mott transition in V2O3 explored by X-ray absorption.
abstract: The changes in the electronic structure of V2O3 across the metal-insulator transition induced by temperature, doping, and pressure are identified using high resolution x-ray absorption spectroscopy at the V pre-K edge. Contrary to what has been taken for granted so far, the metallic phase reached under pressure is shown to differ from the one obtained by changing doping or temperature. Using a novel computational scheme, we relate this effect to the role and occupancy of the a{1g} orbitals. This finding unveils the inequivalence of different routes across the Mott transition in V2O3.
authors.affiliation: Laboratoire de Physique des Solides, CNRS-UMR 8502, Université Paris-Sud, F-91405 Orsay, France.
authors.forename: F
authors.initials: F
authors.lastname: Rodolakis
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authors.initials: P
authors.lastname: Hansmann
authors.forename: J-P
authors.initials: JP
authors.lastname: Rueff
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authors.initials: A
authors.lastname: Toschi
authors.forename: M W
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authors.lastname: Haverkort
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authors.lastname: Sangiovanni
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authors.lastname: Tanaka
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authors.lastname: Saha-Dasgupta
authors.forename: O K
authors.initials: OK
authors.lastname: Andersen
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authors.lastname: Held
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authors.lastname: Sikora
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authors.initials: I
authors.lastname: Alliot
authors.forename: J-P
authors.initials: JP
authors.lastname: Itié
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authors.initials: F
authors.lastname: Baudelet
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authors.lastname: Wzietek
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authors.initials: P
authors.lastname: Metcalf
authors.forename: M
authors.initials: M
authors.lastname: Marsi