Mott Transitions in the 2-band Hubbard Model: A Coherent Potential Approximation Study

Authors

  • Le Duc Anh Department of Physics, Hanoi National University of Education
  • Hoang Anh Tuan Institute of Physics, VAST

DOI:

https://doi.org/10.15625/0868-3166/22/3/2524

Abstract

The half-filled isotropic degenerate two-band Hubbard model is studied within coherent potential approximation. The model is characterized by an Ising-type Hund’s exchange coupling, intra- and inter-orbital Coulomb parameters. We found that the band degeneracy slightly reduces the Mott-Hubbard critical value \(U_C\). We reveal that the system can have two distinct critical values for Mott-Hubbard transitions.

Downloads

Download data is not yet available.

Downloads

Published

31-10-2012

How to Cite

Anh, L. D., & Tuan, H. A. (2012). Mott Transitions in the 2-band Hubbard Model: A Coherent Potential Approximation Study. Communications in Physics, 22(3), 223. https://doi.org/10.15625/0868-3166/22/3/2524

Issue

Section

Papers

Most read articles by the same author(s)

1 2 > >>