Importance of carbon in carbonaceous sulfur hydride room-temperature superconductor

Zheng, X. H.; Zheng, J. X.

doi:10.1016/j.ssc.2021.114295

Cited by 5 publications

(1 citation statement)

References 19 publications

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“…One of the features of covalent hydrides is nonlinear temperature dependence of the electrical resistance in the normal state, observed for both H3S [5] and CSHx [37]. This prevents even an approximate estimation of the Debye temperature using the electrical resistivity in the ambient state and the Bloch-Grüneisen formula [78,109]. Another feature of covalent hydrides is a relatively low upper critical magnetic field HC2.…”

Section: Peculiarities Of the Superconducting Properties Of Polyhydridesmentioning

confidence: 99%

High-temperature superconductivity in hydrides

et al. 2021

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Over the past six years (2015)(2016)(2017)(2018)(2019)(2020)(2021), many superconducting hydrides with critical temperatures TC up to 250 K, which are currently record highs, have been discovered. Now we can already say that a special field of superconductivity has developed. This is hydride superconductivity at ultrahigh pressures. For the most part, the properties of superhydrides are well described by the Migdal-Eliashberg theory of strong electronphonon interaction, especially when anharmonicity of phonons is taken into account. We investigate the isotope effect, the effect of the magnetic field (up to 60-70 T) on the critical temperature and critical current in the hydride samples, and the dependence of Tc on the pressure and the degree of doping. The divergences between the theory and experiment are of interest, especially in the regions of phase stability and in the behavior of the upper critical magnetic fields at low temperatures. We present a retrospective analysis of data of 2015-2021 and describe promising directions for future research of hydride superconductivity.

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Section: Peculiarities Of the Superconducting Properties Of Polyhydridesmentioning

confidence: 99%

High-temperature superconductivity in hydrides

et al. 2021

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New superconducting superhydride LaC₂H₈ at relatively low stabilization pressure

Durajski

Szczȩśniak

2021

Phys. Chem. Chem. Phys.

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Crystal structures and superconductivity of carbonaceous sulfur hydrides at pressures up to 300 GPa

Sun

Iitaka

et al. 2022

Phys. Rev. B

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Importance of carbon in carbonaceous sulfur hydride room-temperature superconductor

Cited by 5 publications

References 19 publications

High-temperature superconductivity in hydrides

High-temperature superconductivity in hydrides

New superconducting superhydride LaC₂H₈ at relatively low stabilization pressure

Crystal structures and superconductivity of carbonaceous sulfur hydrides at pressures up to 300 GPa

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Importance of carbon in carbonaceous sulfur hydride room-temperature superconductor

Cited by 5 publications

References 19 publications

High-temperature superconductivity in hydrides

High-temperature superconductivity in hydrides

New superconducting superhydride LaC2H8 at relatively low stabilization pressure

Crystal structures and superconductivity of carbonaceous sulfur hydrides at pressures up to 300 GPa

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New superconducting superhydride LaC₂H₈ at relatively low stabilization pressure