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arXiv · 1404.5145

Abnormal behavior of crystalline methane in temperature interval $60-70~K$. From experiment to theory

A. V. Leont'eva·A. Yu. Prokhorov·A. Yu. Zakharov·A. I. Erenburg
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Abstract

The paper presents an analysis of mechanical, structural, thermophysical and spectral properties of solid methane in temperature interval $0.5T_{tr} -T_{tr}$ ($T_{tr}$ is the triple point temperature) under equilibrium vapor pressure. It is shown that the anomalies of the studied properties at temperatures 60--70~K have been observed in the body of the reviewed papers. A concept of "topons" (collective excitations of rotational degrees of freedom in solid methane) is proposed. A whole of the observed anomalies can be explained in the frames of this concept. Key words: solid methane, quantum crystals, rotational degrees of freedom, thermophysical and mechanical properties of the crystals

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A. V. Leont'eva, A. Yu. Prokhorov, A. Yu. Zakharov, A. I. Erenburg. 2014-04-29. Abnormal behavior of crystalline methane in temperature interval $60-70~K$. From experiment to theory. https://arxiv.org/abs/1404.5145

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