Electronic band structure of metallic phase V$_{2}$O$_{3}$

ORAL

Abstract

V$_{2}$O$_{3}$ has an archetypal strongly correlated paramagnetic metallic (PM) phase which becomes insulating with alloying or decreasing temperature. Recent progress has been made experimentally to measure the true bulk V 3d density of states of PM phase V$_{2}$O$_{3}$ using high-energy angle-integrated photoemission, and theoretically to quantitatively describe the observed prominent quasiparticle peak near E$_{F}$ using LDA+DMFT. Theoretical predictions of the k-resolved electronic band structure of V$_{2}$O$_{3}$ have been made, but experimental measurement has proven to be very challenging and elusive. We present intermediate-energy soft x-ray angle-resolved photoemission measurements of the PM-phase V$_{2}$O$_{3}$ (0001) cleaved surface that reveal for the first time distinct k-resolved band dispersions within the coherent quasiparticle peak and a corresponding three-fold symmetric Fermi surface topology. The agreement of these measurements to theoretical calculations will be discussed.

*Supported by the U.S. DOE at the Advanced Light Source (DE-AC02-05CH11231) and at the University of Michigan (DE-FG02-07ER46379).

Authors

  • O. Krupin

  • J. Denlinger

    • Lawrence Berkeley National Lab
  • B.J. Kim

  • Ravi S. Singh

  • J.W. Allen

    • University of Michigan