Mott transition in two-dimensional frustrated compounds

被引：38

作者：

Liebsch, A. ^{[1
]}

Ishida, H. ^{[2
]}

Merino, J. ^{[3
]}

机构：

[1] Forschungszentrum Julich, Inst Festkorperforsch, D-52425 Julich, Germany

[2] Nihon Univ, Coll Humanities & Sci, Tokyo 156, Japan

[3] Univ Autonoma Madrid, Dept Fis Teor Mat Condensada, E-28049 Madrid, Spain

来源：

PHYSICAL REVIEW B | 2009年 / 79卷 / 19期

关键词：

frustration; Hubbard model; magnetic anisotropy; magnetic transitions; metal-insulator transition; SPIN-LIQUID-STATE; HEISENBERG-ANTIFERROMAGNET; SUPERCONDUCTIVITY; PRESSURE;

D O I：

10.1103/PhysRevB.79.195108

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The phase diagrams of isotropic and anisotropic triangular lattices with local Coulomb interactions are evaluated within cluster dynamical mean-field theory. As a result of partial geometric frustration in the anisotropic lattice, short-range correlations are shown to give rise to re-entrant behavior which is absent in the fully frustrated isotropic limit. The qualitative features of the phase diagrams including the critical temperatures are in good agreement with experimental data for the layered organic charge-transfer salts kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Cl and kappa-(BEDT-TTF)(2)Cu-2(CN)(3).

引用

页数：4

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