ON THE IMPORTANCE OF ANISOTROPIC EXCHANGE COUPLING ON TO THE STRUCTURE OF SPIN-POLARIZED CLUSTERS IN LAYERED CUPRATES

被引：19

作者：

EREMIN, MV ^{[1
]}

SIGMUND, E ^{[1
]}

机构：

[1] KAZAN VI LENIN STATE UNIV,420008 KAZAN,RUSSIA

来源：

SOLID STATE COMMUNICATIONS | 1994年 / 90卷 / 12期

关键词：

D O I：

10.1016/0038-1098(94)90245-3

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The low energy spectrum of spin-polarized clusters in layered cuprates is examined. Two types of clusters confining the motion of oxygen holes are discussed. The ground state of the pentanuclear copper cluster has a total spin S = 2, whereas the one of the tetranuclear copper cluster is characterised by S = 3/2. Anisotropic exchange coupling splits the magnetic ground state into a sequence of state, which in a natural way provide e.g. an explanation of EPR data for La2CuO4+delta compounds.

引用

页码：795 / 797

页数：3

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