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Structure of an inert layer of ~4He adsorbed on mesoporous silica

机译:介孔二氧化硅上吸附的〜4He惰性层的结构

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摘要

We have performed the measurements of the vapor pressure and heat capacity for inert layer He-4 adsorbed on a mesoporous silica. The heat capacity was found to exhibit a Schottky peak, indicating the excitation of the localized solid to fluid. We analyzed the heat capacity over a wide temperature range according to a model that considers the contribution of the localized solid and excited fluid, and clarified that the excited fluid coexists with the localized solid at high temperatures. Based on the areal density dependence of the amount of excited fluid, we discuss the formation of an inert layer prior to the appearance of a superfluid layer.
机译:我们对吸附在中孔二氧化硅上的惰性层He-4的蒸气压和热容量进行了测量。发现热容量表现出肖特基峰,表明局部固体向流体的激发。我们根据考虑局部固体和受激流体贡献的模型分析了宽温度范围内的热容,并阐明了在高温下受激流体与局部固体共存。基于受激流体量的面密度依赖性,我们讨论了在超流体层出现之前惰性层的形成。

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  • 来源
    《Physical review》 |2019年第2期|024103.1-024103.6|共6页
  • 作者单位

    Univ Electrocommun, Dept Engn Sci, Chofu, Tokyo 1828585, Japan;

    Univ Electrocommun, Dept Engn Sci, Chofu, Tokyo 1828585, Japan;

    Univ Electrocommun, Dept Engn Sci, Chofu, Tokyo 1828585, Japan;

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