THE TRIANGULAR-LATTICE HUBBARD-MODEL - A FRUSTRATED HIGHLY CORRELATED ELECTRON-SYSTEM

被引：11

作者：

GAZZA, CJ

TRUMPER, AE

CECCATTO, HA

机构：

[1] Inst. de Fisica, Univ. Nacional de Rosario

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1994年 / 6卷 / 41期

关键词：

D O I：

10.1088/0953-8984/6/41/001

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have studied the ground-state properties of the half-filled Hubbard model on the triangular lattice by means of the slave-boson technique. The combined effects of high correlation and frustration in this non-bipartite lattice produce a rich phase diagram, including paramagnetic, commensurate spiral, and linear spin-density-wave phases, as well as a metal-insulator transition. Unlike previous Hartree-Fock studies of this model, the slave-boson technique predicts no metallic incommensurate spiral state to be the stable ground state in any region of parameter space.

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页码：L625 / L630

页数：6

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