MAGNETIC EXCITATIONS IN HIGH-TC SUPERCONDUCTORS

被引：2
|
作者：
GOLUB, AA
KABANOV, VV
MASHTAKOV, OY
机构：
[1] Institute of Applied Physics, Academy of Sciences of Moldova, Kishinev, 277028
来源：
PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES | 1991年 / 64卷 / 06期
关键词：
D O I：
10.1080/13642819108207636
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Magnetic excitations of various kinds possible within the Emery model are studied in the present paper. It is shown that the formation of polaron-type excitations is favourable for two holes with aligned spins (triplet). The exchange coupling J increase leads to the formation of a large-size triplet bipolaron. If hole spins are antiparallel, a bound s-type singlet is probably always formed and the decrease in J causes an increase in the localization radius.
引用
收藏
页码：761 / 767
页数：7
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