ELECTRONIC PHASE-SEPARATION - EXTENDED MEAN-FIELD CALCULATIONS FOR CUO2 LAYERS IN HIGH-T(C) SUPERCONDUCTORS

被引：18

作者：

KLEMM, D

LETZ, M

SIGMUND, E

ZAVT, GS

机构：

[1] TECH UNIV COTTBUS,LEHRSTUHL THEORET PHYS,D-03044 COTTBUS,GERMANY

[2] ESTONIAN ACAD SCI,INST PHYS,TARTU 2400,ESTONIA

来源：

PHYSICAL REVIEW B | 1994年 / 50卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.50.7046

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We examine the stability of spin-polarized cluster states (ferrons) which appear by hole doping of the antiferromagnetically ordered CuO2 planes in the high-T(c) cuprates. The influence of additional holes is calculated within a self-consistent mean-field-type approximation. The variation procedure for the spin polarization is extended over up to five CuO2 plaquettes. Different correlation terms (U(pd), U(p)) affecting the cluster stability are discussed. For all cases the cluster binding energy and the polarization of the Cu spins are calculated. In addition the interaction between different clusters is discussed.

引用

页码：7046 / 7055

页数：10

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