IMPURITY SPIN-COUPLED TO A STRONGLY CORRELATED ELECTRON-SYSTEM - GROUND-STATE PROPERTIES

被引：1

作者：

WANG, DF

GRUBER, C

机构：

[1] Institut de Physique Théorique, Icole Polytechnique Fédérale de Lausanne, PHB-Ecublens

来源：

PHYSICAL REVIEW B | 1995年 / 51卷 / 08期

关键词：

D O I：

10.1103/PhysRevB.51.4820

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Exact results are provided for the ground-state properties of an impurity spin coupled to a conducting band of strongly correlated electrons described by a t-J model. The ground states are proved to be unique, apart from the spin rotational degeneracy, and the ground-state spins are found in the following cases: (1) J=0, one-hole hopping on a lattice in dimensions d2 and (2) J0, arbitrary number of holes hopping on a one-dimensional lattice, i.e., a Luttinger liquid interacting with a localized impurity spin. © 1995 The American Physical Society.

引用

页码：4820 / 4822

页数：3