Low-temperature magnetization of submonolayer 3He adsorbed on HD preplated graphite
Low-temperature magnetization of submonolayer 3He adsorbed on HD preplated graphite
复制标题
HD预镀石墨上吸附的亚单层3He的低温磁化
DOI：
10.1103/physrevlett.85.5146
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发表时间：
2000
影响因子：
8.6
通讯作者：
Ishimoto
中科院分区：
文献类型：
--
作者：
Ikegami;Masutomi;Obara;Ishimoto
~ 3 He吸附在双层HD预镀石墨上的亚单分子层的NMR研究已经进行到100 K，这比交换能（J）小一个数量级以上。在高阻挫的反铁磁固体区域，即使在J附近的温度下，磁化强度也服从居里-外斯定律，然后逐渐增加到100 K。然而，它并没有表现出任何对应于自旋能隙的反常行为。归一化磁化强度与降低温度（T/J）的关系与凝固后的密度无关。这与高温区的结果一致，即主要的多自旋交换具有类似的密度依赖性。
NMR studies of submonolayer 3He adsorbed on a bilayer of HD preplated graphite have been made down to 100 &mgr;K, which is more than 1 order of magnitude smaller than the exchange energy ( J). In the highly frustrated antiferromagnetic solid region, the magnetization obeys a Curie-Weiss law even at temperatures around J and then increases gradually down to 100 &mgr;K. Nevertheless, it does not show any anomalous behavior corresponding to a spin gap. The normalized magnetization versus the reduced temperature ( T/J) is independent of the density just after solidification. This is consistent with the result in the high-temperature region, that the main multiple-spin exchanges have a similar density dependence.