石墨上薄$^4$ He膜的Specific heat
Specific heat of thin $^4$He films on graphite
摘要：
用量子蒙特卡罗模拟计算了吸附在石墨衬底上的双层He-4膜的比热随温度的变化。这些结果与最近的实验观察结果一致，因为它们广泛地再现了它们最重要的特征。然而，无论是“超固体”或“超流体六角”相，其中实验数据声称是证据，观察。有人争辩说，热容量的测量可能不是一个很好的预测在这个系统中的结构和超流体的转变，因为他们的解释往往是模棱两可的。
英文摘要：
The specific heat of a two-layer He-4 film adsorbed on a graphite substrate is estimated as a function of temperature by Quantum Monte Carlo simulations. The results are consistent with recent experimental observations, in that they broadly reproduce their most important features. However, neither the "supersolid" nor the "superfluid hexatic" phases, of which experimental data are claimed to be evidence, are observed. It is contended that heat capacity measurements alone may not be a good predictor of structural and superfluid transitions in this system, as their interpretation is often ambiguous.
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