FERROMAGNETIC ANOMALIES IN 2-DIMENSIONAL HE-3 ADSORBED ON GRAPHITE

被引：7
|
作者：
SIQUEIRA, M
LUSHER, C
COWAN, B
SAUNDERS, J
机构：
[1] Millikelvin Laboratory, Department of Physics, Royal Holloway and Bedford New College, University of London, Egham
来源：
JOURNAL OF LOW TEMPERATURE PHYSICS | 1992年 / 89卷 / 3-4期
关键词：
D O I：
10.1007/BF00694101
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The second layer of solid He-3 adsorbed on graphite exhibits a pronounced exchange anomaly which is peaked sharply at a surface density of 0.075 angstrom-2. The much weaker exchange anomaly in the submonolayer solid film, first detected in heat capacity studies, has been investigated by measurements of the nuclear magnetic susceptibility to temperatures below 1 mK and found to be ferromagnetic. We report the dependence of the effective exchange constant on surface density and propose a model in which both anomalies arise from similar two dimensional commensurate structures.
引用
收藏
页码：619 / 623
页数：5
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