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Importance of carbon in carbonaceous sulfur hydride room-temperature superconductor
Solid State Communications ( IF 2.1 ) Pub Date : 2021-04-03 , DOI: 10.1016/j.ssc.2021.114295
X.H. Zheng , J.X. Zheng

In the new carbonaceous sulfur hydride superconductor, with Tc=287 K at 267 GPa, the characteristic temperature is found to be 6239 K, implying a Debye temperature vastly exceeding that of metallic hydrogen. With the help of the Eliashberg–Nambu formalism and a generic model for the electron–phonon spectrum density, 0.92<λ<1.01, 0.125<μ<0.179, and 3.90<2Δ0kBTc<3.92 are shown to be the most likely defining properties of the superconductor. The extraordinarily high Debye temperature and relatively low λ indicate the importance of carbon may be comparable to or even eclipsing that of hydrogen in the pursuit of higher Tc in ambient.



中文翻译:

碳在氢化碳硫氢化物室温超导体中的重要性

在新型碳质氢化硫超导体中, ŤC=287K在267 GPa时,特征温度为6239 K,这意味着德拜温度大大超过了金属氢的温度。借助Eliashberg-Nambu形式主义和电子-声子谱密度的通用模型,092<λ<1个010125<μ<0179, 和 390<2个Δ0ķŤC<392被证明是超导体最有可能定义的特性。德拜温度异常高而相对较低λ 表明在追求更高的碳含量方面,碳的重要性可能与氢的重要性相媲美,甚至超过氢。 ŤC 在环境中。

更新日期:2021-04-08
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