The Mott metal-insulator transition in half-filled two-dimensional Hubbard models

We study the Mott transition in the two dimensional Hubbard model by using the variational cluster approximation. The transition potential obtained is roughly Uc ≈ 2 and 6 for square and triangular lattices, respectively. A comparison between results of this approximation and other quantum cluster m...

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Bibliographic Details
Main Author: Peyman Sahebsara
Format: Article
Language:English
Published: Isfahan University of Technology 2008-06-01
Series:Iranian Journal of Physics Research
Subjects:
VCA
Online Access:http://ijpr.iut.ac.ir/browse.php?a_code=A-10-1-281&slc_lang=en&sid=1