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Electronic correlations in V 2 O 3 studied with K-edge X-ray absorption spectroscopy

We show that K-edge X-ray absorption spectroscopy can be used as a sensitive probe of electron correlations in V 2 O 3 . This is possible thanks to a detailed study of the V K pre-edge region while changing the thermodynamic parameters of the system. LDA+DMFT provides an interpretation of the change...

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Bibliographic Details
Main Authors: Rodolakis, Fanny (Author) , Haverkort, Maurits W. (Author)
Format: Article (Journal)
Language:English
Published: 2009
In: Journal of physics. Conference Series
Year: 2009, Volume: 190, Issue: 1, Pages: 012092
ISSN:1742-6596
DOI:10.1088/1742-6596/190/1/012092
Online Access:Verlag, Volltext: http://dx.doi.org/10.1088/1742-6596/190/1/012092
Verlag, Volltext: http://stacks.iop.org/1742-6596/190/i=1/a=012092
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Author Notes:F. Rodolakis, P. Hansmann, J.-P. Rueff, A. Toschi, M.W. Haverkort, G. Sangiovanni, K. Held, M. Sikora, A. Congeduti, J.-P. Itié, F. Baudelet, P. Metcalf and M. Marsi
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Summary:We show that K-edge X-ray absorption spectroscopy can be used as a sensitive probe of electron correlations in V 2 O 3 . This is possible thanks to a detailed study of the V K pre-edge region while changing the thermodynamic parameters of the system. LDA+DMFT provides an interpretation of the changes in the electronic structure, in particular in the upper Hubbard band, at the Mott transition. The possibility of modifying the Coulomb interaction and observing the metal-insulator transition by applying an external pressure is also demonstrated, which is of particular interest for the study of many strongly correlated materials.
Item Description:Die Ziffern "2" und "3" Im Titel sind tiefgestellt
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Physical Description:Online Resource
ISSN:1742-6596
DOI:10.1088/1742-6596/190/1/012092

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