Session R45: Strong Correlation in Metals: Mott Transition

2:30 PM–4:54 PM, Wednesday, March 15, 2006
Baltimore Convention Center - 348

Sponsoring Unit: DCMP
Chair: Sergej Savrasov, University of California, Davis

Abstract ID: BAPS.2006.MAR.R45.10

Abstract: R45.00010 : Dynamical Mean Field Study of the Mott Transition on the Triangular Lattice Employing the Quantum Monte Carlo Technique

4:18 PM–4:30 PM

Preview Abstract

Authors:

  Karan Aryanpour
  Richard T. Scalettar
  Warren E. Pickett
    (Department of Physics, UC DAVIS)

  Alexandru Macridin
  Mark Jarrell
    (Department of Physics, Uinversity of Cincinnati)

We present results on the Mott transition on the triangular lattice with nearest neighbor hopping employing the Dynamical Mean Field Theory (DMFT) and the Quantum Monte Carlo (QMC). DMFT and QMC can yield the critical value of electron-electron interaction U as a function of temperature T for the metal-insulator transition. By using the Maximum Entropy (MaxEnt) method, we calculate the Density of States (DOS) for a variety of U and T values. The formation of an Abrikosov-Suhl resonance peak in the intermediate coupling regime and a Mott gap in the strong coupling regime is observed. In addition, we discuss the behavior of the magnetic moment as a function of U and T.

To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2006.MAR.R45.10