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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://elar.urfu.ru/handle/10995/102862 |
Access: | info:eu-repo/semantics/openAccess |
RSCI ID: | 46867276 |
SCOPUS ID: | 85107390844 |
WOS ID: | 000656669300001 |
PURE ID: | 22103242 0b994281-94fe-4365-9523-c5a1abead60a |
ISSN: | 9538984 |
DOI: | 10.1088/1361-648X/abfc18 |
Appears in Collections: | Научные публикации ученых УрФУ, проиндексированные в SCOPUS и WoS CC |
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