Inequivalent routes across the mott transition in V 2O 3 explored by X-ray absorption

• Verfasst von: Rodolakis, Fanny [VerfasserIn]
• Verfasst von: Haverkort, Maurits W. [VerfasserIn]
• Titel: Inequivalent routes across the mott transition in V 2O 3 explored by X-ray absorption
• Verf.angabe: F. Rodolakis, P. Hansmann, J.-P. Rueff, A. Toschi, M.W. Haverkort, G. Sangiovanni, A. Tanaka, T. Saha-Dasgupta, O.K. Andersen, K. Held, M. Sikora, I. Alliot, J.-P. Itié, F. Baudelet, P. Wzietek, P. Metcalf, and M. Marsi
• Fussnoten: Die Ziffern 2 und 3 im Titel sind tiefgestellt ; Gesehen am 06.11.2017
• Titel Quelle: Enthalten in: Physical review letters
• Jahr Quelle: 2010
• Band/Heft Quelle: 104(2010,4) Artikel-Nummer 047401, 4 Seiten
• ISSN Quelle: 1079-7114
• DOI: doi:10.1103/PhysRevLett.104.047401
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1565053958

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 a1g orbitals. This finding unveils the inequivalence of different routes across the Mott transition in V2O3.