F Rodolakis et al 2009 J. Phys.: Conf. Ser. 190 012092 doi:10.1088/1742-6596/190/1/012092
Electronic correlations in V2O3 studied with K-edge X-ray absorption spectroscopy
F Rodolakis1,2, P Hansmann3,4, J-P Rueff2,5, A Toschi3, M W Haverkort4, G Sangiovanni3, K Held3, M Sikora6, A Congeduti2, J-P Itié2, F Baudelet2, P Metcalf7 and M Marsi1
Show affiliationsWe show that K-edge X-ray absorption spectroscopy can be used as a sensitive probe of electron correlations in V2O3. 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.
- PACS
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78.70.Dm X-ray absorption spectra
71.45.Gm Exchange, correlation, dielectric and magnetic response functions, plasmons
71.30.+h Metal-insulator transitions and other electronic transitions
71.15.Mb Density functional theory, local density approximation, gradient and other corrections
71.27.+a Strongly correlated electron systems; heavy fermions
- Subjects
- Dates
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Issue 1 (2009)
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Electronic correlations in V2O3 studied with K-edge X-ray absorption spectroscopy
F Rodolakis et al 2009 J. Phys.: Conf. Ser. 190 012092
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