ZERO-TEMPERATURE PHASE-DIAGRAM OF THE ONE-DIMENSIONAL T-J MODEL

被引：3

作者：

HELLBERG, CS ^{[1
]}

MELE, EJ ^{[1
]}

机构：

[1] UNIV PENN,DEPT PHYS,PHILADELPHIA,PA 19104

来源：

PHYSICA B | 1994年 / 199卷

关键词：

D O I：

10.1016/0921-4526(94)91823-6

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We study the t-J model in one dimension by combining a variational approach and an exact ground-state projection method. We find that the model exhibits Luttinger-liquid behavior for most of the phase diagram before the critical J/t for phase separation. However, at small densities and high interaction strengths, a new Luther-Emery-liquid phase with a gap to spin excitations and enhanced superconducting correlations is found.

引用

页码：322 / 324

页数：3

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