Work

Nonmagnetic Insulating States near the Mott Transitions on Lattices with Geometrical Frustration and Implications for κ-(ET)2Cu2(CN)3

Year: 2002

Type: article

Abstract: We study phase diagrams of the Hubbard model on anisotropic triangular lattices, which also represents a model for $κ$-type BEDT-TTF compounds. In contrast with mean-field predictions, path-integral renormalization group calculations show a universal presence of nonmagnetic insulator sandwitched by antiferromagnetic insulator and paramagnetic metals. The nonmagnetic phase does not show a simple translational symmetry breakings such as flux phases, implying a genuine Mott insulator. We discuss possible relevance on the nonmagnetic insulating phase found in $κ$-(ET)$_2$Cu$_2(CN)_3$.

Source: Journal of the Physical Society of Japan

DOI: 10.1143/jpsj.71.2109

Authors: Hidekazu Morita, Shinji Watanabe, Masatoshi Imada

Institutions: The Institute for Solid State Physics, The University of Tokyo, The University of Tokyo

Language: English

Topic: Organic and Molecular Conductors Research

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funder: Japan Society for the Promotion of Science

OpenAlex ID: W2083372383

FWCI: 6.758

Cites: 16

Cited by: 262

Related to: 10