Experimental Electronic Structure and Interband Nesting in BaVS_3
  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. 
S. Mitrovic, P. Fazekas, C. Sondergaard, D. Ariosa, N. Barisic, H.   Berger, D. Cloetta, L. Forro, H. Hochst, I. Kupcic, D. ...