Physica B 485, 121–126 (2016)

ISSN: 0921-4526, SCI

Critical behavior near the Mott transition in the half-filled asymmetric Hubbard model

Anh-Tuan Hoang, Duc-Anh Le

We study the half-filled asymmetric Hubbard model within the two-site dynamical mean field theory.At zero temperature,explicit expressions of the critical interaction Uc for the Mott transition and the local self-energy areanaly tically derived.Critical behavior of the quasiparticle weights and the double occu-pancy are obtained analytically as functions of the on-siteinteraction U and the hopping asymmetry r.Our results are in good agreement with the ones obtained by much more sophisticated theory.

DOI: http://dx.doi.org/10.1016/j.physb.2016.01.021

Tải xuống: