Superfluid critical behavior in 4He-filled porous media.
Superfluid critical behavior in 4He-filled porous media.
复制标题
4He 填充多孔介质中的超流体临界行为。
DOI：
10.1103/physrevlett.65.2410
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发表时间：
1990
影响因子：
8.6
通讯作者：
Reppy
中科院分区：
文献类型：
--
作者：
Wong;Crowell;Cho;Reppy
我们观察到尖锐的尖状热容奇点，符合超流转变，在两个{sup 4}氦填充气凝胶玻璃。这些特征被解释为在这些系统中的超流转变的真正的临界行为的确凿证据。尖状热容奇异性证实了{sup 4}氦填充气凝胶与散装氦不在同一普适性类中。
We have observed sharp cusplike heat-capacity singularities, coincident with the superfluid transition, in two {sup 4}He-filled aerogel glasses. These features are interpreted as conclusive evidence of genuine critical behavior at the superfluid transition in these systems. The cusplike heat-capacity singularities confirm that {sup 4}He-filled aerogels are not in the same universality class as bulk helium.