U(1) gauge theory of the Hubbard model:: Spin liquid states and possible application to κ-(BEDT-TTF)2Cu2(CN)3 -: art. no. 036403

被引：364

作者：

Lee, SS ^{[1
]}

Lee, PA ^{[1
]}

机构：

[1] MIT, Dept Phys, Cambridge, MA 02139 USA

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 03期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.95.036403

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We formulate a U(1) gauge theory of the Hubbard model in the slave-rotor representation. From this formalism it is argued that spin liquid phases may exist near the Mott transition in the Hubbard model on triangular and honeycomb lattices at half filling. The organic compound kappa-(BEDT-TTF)(2)Cu-2(CN)(3) is a good candidate for the spin liquid state on a triangular lattice. We predict a highly unusual temperature dependence for the thermal conductivity of this material.

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