Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/102862
Title: Comparison of highly-compressed C2/m-SnH12superhydride with conventional superconductors
Authors: Talantsev, E. F.
Issue Date: 2021
Publisher: IOP Publishing Ltd
Citation: Talantsev E. F. Comparison of highly-compressed C2/m-SnH12superhydride with conventional superconductors / E. F. Talantsev. — DOI 10.1088/1361-648X/abfc18 // Journal of Physics Condensed Matter. — 2021. — Vol. 33. — Iss. 28. — 285601.
Abstract: Satterthwaite and Toepke (1970 Phys. Rev. Lett. 25 741) predicted high-temperature superconductivity in hydrogen-rich metallic alloys, based on an idea that these compounds should exhibit high Debye frequency of the proton lattice, which boosts the superconducting transition temperature, T c. The idea has got full confirmation more than four decades later when Drozdov et al (2015 Nature 525 73) experimentally discovered near-room-temperature superconductivity in highly-compressed sulphur superhydride, H3S. To date, more than a dozen of high-temperature hydrogen-rich superconducting phases in Ba-H, Pr-H, P-H, Pt-H, Ce-H, Th-H, S-H, Y-H, La-H, and (La, Y)-H systems have been synthesized and, recently, Hong et al (2021 arXiv:2101.02846) reported on the discovery of C2/m-SnH12 phase with superconducting transition temperature of T c ∼ 70 K. Here we analyse the magnetoresistance data, R(T, B), of C2/m-SnH12 phase and report that this superhydride exhibits the ground state superconducting gap of Δ(0) = 9.2 0.5 meV, the ratio of 2Δ(0)/k B T c = 3.3 0.2, and 0.010 < T c/T F < 0.014 (where T F is the Fermi temperature) and, thus, C2/m-SnH12 falls into unconventional superconductors band in the Uemura plot. © 2021 IOP Publishing Ltd.
Keywords: HIGH-PRESSURE SUPERCONDUCTIVITY
HYDROGEN-RICH SUPERCONDUCTORS
SUPERCONDUCTING ENERGY GAP
GROUND STATE
SUPERCONDUCTING MATERIALS
CONVENTIONAL SUPERCONDUCTORS
DEBYE FREQUENCIES
FERMI TEMPERATURE
HIGH-TEMPERATURE SUPERCONDUCTIVITY
NEAR ROOM TEMPERATURE
SUPER CONDUCTING PHASIS
SUPERCONDUCTING GAPS
UNCONVENTIONAL SUPERCONDUCTORS
SUPERCONDUCTING TRANSITION TEMPERATURE
URI: http://hdl.handle.net/10995/102862
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85107390844
PURE ID: 22103242
0b994281-94fe-4365-9523-c5a1abead60a
ISSN: 9538984
DOI: 10.1088/1361-648X/abfc18
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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