title: Fermi Surface of Metallic V_{2}O_{3} from Angle-Resolved Photoemission: Mid-level Filling of e_{g}^{π} Bands.
abstract: Using angle resolved photoemission spectroscopy, we report the first band dispersions and distinct features of the bulk Fermi surface (FS) in the paramagnetic metallic phase of the prototypical metal-insulator transition material V_{2}O_{3}. Along the c axis we observe both an electron pocket and a triangular holelike FS topology, showing that both V 3d a_{1g} and e_{g}^{π} states contribute to the FS. These results challenge the existing correlation-enhanced crystal field splitting theoretical explanation for the transition mechanism and pave the way for the solution of this mystery.
authors: Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
authors: I
authors: I
authors: Lo Vecchio
authors: Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
authors: J D
authors: JD
authors: Denlinger
authors: Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
authors: O
authors: O
authors: Krupin
authors: Max-Planck-Institut fur Festkörperforschung, Heisenbergstrasse 1, D-70569 Stuttgart, Germany.
authors: B J
authors: BJ
authors: Kim
authors: School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907, USA.
authors: P A
authors: PA
authors: Metcalf
authors: CNR-IOM and Dipartimento di Fisica, Università di Roma "Sapienza", I-00185 Rome, Italy.
authors: S
authors: S
authors: Lupi
authors: Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA.
authors: J W
authors: JW
authors: Allen
authors: Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.|Department of Physics, University of California Berkeley, Berkeley, California 94720, USA.
authors: A
authors: A
authors: Lanzara