A DISCRETE S = 1 MODEL FOR ELECTRON LOCALIZATION PROPERTIES OF THE MIXED-VALENCE BIFERROCENIUM SALTS

被引：11

作者：

BOUKHEDDADEN, K ^{[1
]}

LINARES, J ^{[1
]}

GALAM, S ^{[1
]}

VARRET, F ^{[1
]}

机构：

[1] UNIV PARIS 07,PHYS SOLIDES GRP,CNRS,UA 17,F-75251 PARIS 05,FRANCE

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1993年 / 5卷 / 04期

关键词：

D O I：

10.1088/0953-8984/5/4/014

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The peculiar biferrocenium cation configurational diagram is discretized in terms of a fictitious spin S = 1. At the solid state, this leads to a Blume-Emery-Griffiths Hamiltonian which is solved in the mean-field approach. Order-disorder transitions are obtained, either continuous or discontinuous, together with a thermal equilibrium between trapped and delocalized states. These features are discussed with respect to characteristics of the measuring techniques.

引用

页码：469 / 476

页数：8

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