STUDIES ON SOME GROUND-STATE PROPERTIES AND SPECIFIC-HEAT OF MIXED-VALENCE SYSTEMS

被引：2
|
作者：
GHOSH, NK
GHOSH, SC
SARKAR, RL
机构：
[1] Department of Physics, University of Kalyani
来源：
PHYSICA STATUS SOLIDI B-BASIC RESEARCH | 1992年 / 171卷 / 01期
关键词：
D O I：
10.1002/pssb.2221710112
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
A simple two-site model with spin is considered for which the exact solution is admissible. The phenomenon of valence transition is investigated. Finite temperature specific heat and magnetic intersite spin correlations are also studied. It is shown that strong f-d Coulomb interaction makes the first-order transition possible. It is also shown that the magnetic intersite spin correlations are sensitive to f-d Coulomb interaction and hopping interaction. The results are compared with previous works.
引用
收藏
页码：107 / 112
页数：6
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