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Experimental Electronic Structure and Interband Nesting in BaVS_3

S. Mitrovic·P. Fazekas·C. Sondergaard·D. Ariosa·N. Barisic·H. Berger·D. Cloetta·L. Forro·H. Hochst·I. Kupcic·D. Pavuna·G. Margaritondo
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Abstract

The correlated 3d sulphide BaVS_3 is a most interesting compound because of the apparent coexistence of one-dimensional and three-dimensional properties. Our experiments explain this puzzle and shed new light on its electronic structure. High-resolution angle-resolved photoemission measurements in a 4eV wide range below the Fermi level explored the coexistence of weakly correlated a_1g wide-band and strongly correlated e_g narrow-band d-electrons that is responsible for the complicated behavior of this material. The most relevant result is the evidence for a_1g--e_g inter-band nesting condition.

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S. Mitrovic, P. Fazekas, C. Sondergaard, D. Ariosa, N. Barisic, H. Berger, D. Cloetta, L. Forro, H. Hochst, I. Kupcic, D. Pavuna, G. Margaritondo. 2005-02-05. Experimental Electronic Structure and Interband Nesting in BaVS_3. https://doi.org/10.1103/physrevb.75.153103

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