RVB-TYPE STATES IN SYSTEMS WITH CHARGE AND SPIN DEGREES OF FREEDOM - SM3SE4, Y1-XSCXMN2 ETC

被引：23

作者：

IRKHIN, VY

KATSNELSON, MI

机构：

[1] Institute of Metal Physics

来源：

PHYSICS LETTERS A | 1990年 / 150卷 / 01期

关键词：

D O I：

10.1016/0375-9601(90)90058-V

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Experimental data on systems with charge (Sm3Se4, Fe3O4, Yb4As3) and spin (Y1-xScxMn2) degrees of freedom are analysed, which indicate the formation of a quantum (pseudo) spin liquid state (suppression of long-range order, occurence of an anomalous linear term in the specific heat). A model yielding an anisotropic pseudospin-1/2 Hamiltonian is proposed for systems with charge degrees of freedom. The problem of the coexistence of an RVB-type state and "antiferromagnetic" ordering is discussed. © 1990.

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页码：47 / 50

页数：4

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