Magnetic and electronic properties of the kagome-like RCuO2.66 compounds

被引：2

作者：

Lacroix, C ^{[1
]}

Canals, B ^{[1
]}

NunezRegueiro, MD ^{[1
]}

机构：

[1] EUROPEAN SYNCHROTRON RADIAT FACIL,F-38043 GRENOBLE,FRANCE

来源：

PHYSICA B | 1997年 / 230卷

关键词：

Kagome lattice; RCuO2.66;

D O I：

10.1016/S0921-4526(96)00626-6

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

In the hexagonal phase of the RCuO2.66 delafossite (R = La or Y), the Cu-Cu superexchange interactions mediated by the O atoms yield an effective Cu network topologically equivalent to a kagome lattice. For the O-content 2.66, only 2/3 of the Cu ions are magnetic. We propose a model which points out the relevance of the topology for understanding the magnetic and electronic properties of these compounds. Two models are presented, one for the insulating phase, the other based on the t-J model describing the metallic phase.

引用

页码：500 / 502

页数：3