SPIN WAVE STABILITY OF FERROMAGNETIC STATE FOR A NARROW S-BAND

被引：33
作者：
ROTH, LM
机构：
来源：
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 1967年 / 28卷 / 08期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/0022-3697(67)90285-5
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A variational method is used to improve upon the random phase approximation result for the energy of a long wave length spin wave in the ferromagnetic state of a narrow s-band. The effect of including correlation is to restrict the range in which the effective exchange integral is positive. The results are consistent with the findings of Nagaoka for the case of a nearly half filled band. © 1967.
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页码：1549 / &
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