Anomalous behavior in high-pressure carbonaceous sulfur hydride
Anomalous behavior in high-pressure carbonaceous sulfur hydride
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DOI：
10.1016/j.physc.2021.1353851
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发表时间：
2021-03-10
影响因子：
1.7
通讯作者：
Cohen, Marvin L.
中科院分区：
文献类型：
--
作者：
Dogan, Mehmet;Cohen, Marvin L.
Snider等人的一项新实验研究[2020 Nature 586 373-7]报道了高压碳硫氢系统的行为，作者将其解释为室温下的超导性。在临界温度下电阻的突然变化以及外加磁场作用下R / T特性的变化都指向超导性。这是一项非常令人兴奋的研究，在最重要的科学领域之一，因此，对社区来说，调查这些发现并希望重现这些结果是至关重要的。在本文中，我们提出的计算扩展了Hirsch和Marsiglio [arXiv:2010.10307]提出的论点，并提供了一些关于可能解释观测数据的物理机制的推测。我们表明，在实验论文中提出的分析中存在错误，并且通过正确的分析，报告的R与T数据显着偏离预期行为。特别是，超导转变时电阻的急剧变化与强II型超导体不一致。
A new experimental study by Snider et al. [2020 Nature 586 373-7] reported behavior in a high-pressure carbon-sulfur-hydrogen system that has been interpreted by the authors as superconductivity at room temperature. The sudden change of electrical resistance at a critical temperature and the change of the R vs. T behavior with an applied magnetic field point to superconductivity. This is a very exciting study in one of the most important areas of science, hence, it is crucial for the community to investigate these findings and hopefully reproduce these results. In this paper, we present calculations that expand upon the arguments put forth by Hirsch and Marsiglio [arXiv:2010.10307], and offer some speculations about physical mechanisms that might explain the observed data. We show that there are errors in the analysis presented in the experimental paper, and with the correct analysis, the reported R vs. T data significantly deviate from the expected behavior. In particular, the extremely sharp change in resistance at the superconducting transition is not consistent with a strongly type II superconductor.