Inequivalent routes across the Mott transition in V2O3 explored by X-ray absorption.

Rodolakis, F; Hansmann, P; Rueff, J-P; Toschi, A; Haverkort, M W; Sangiovanni, G; Tanaka, A; Saha-Dasgupta, T; Andersen, O K; Held, K; Sikora, M; Alliot, I; Itié, J-P; Baudelet, F; Wzietek, P; Metcalf, P; Marsi, M

Rodolakis, F; Hansmann, P; Rueff, J-P; Toschi, A; Haverkort, M W; Sangiovanni, G; Tanaka, A; Saha-Dasgupta, T; Andersen, O K; Held, K; Sikora, M; Alliot, I; Itié, J-P; Baudelet, F; Wzietek, P; Metcalf, P; Marsi, M.

Afiliación

Rodolakis F; Laboratoire de Physique des Solides, CNRS-UMR 8502, Université Paris-Sud, F-91405 Orsay, France.

Phys Rev Lett ; 104(4): 047401, 2010 Jan 29.

Article en En | MEDLINE | ID: mdl-20366736

RESUMEN

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.

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Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Prognostic_studies Idioma: En Revista: Phys Rev Lett Año: 2010 Tipo del documento: Article País de afiliación: Francia Pais de publicación: Estados Unidos

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