Coherent potential approximation study of the Mott transition in optical lattice system with site-dependent interactions

Duc-Anh Le (), Thi-Thu-Trang Tran and Anh-Tuan Hoang

The European Physical Journal B: Condensed Matter and Complex Systems, 2013, vol. 86, issue 12, 1-4

Abstract: We study the Mott transition in the half-filled Hubbard model with spatially alternating interactions by means of the coherent potential approximation. The phase boundary between metallic and insulating phases at zero temperature is derived and the nature of the Mott states is also considered. Our results are in good agreement with the ones recently obtained by the two-site dynamical mean-field theory. Copyright EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2013

Keywords: Solid State and Materials (search for similar items in EconPapers)
Date: 2013
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DOI: 10.1140/epjb/e2013-40896-1

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