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High Field Magnetotransport in Superconducting Hydrides under Pressure

MPS-Authors
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Minkovv,  Vasily
High Pressure Group, Max Planck Institute for Chemistry, Max Planck Society;

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Knyazev,  Dmitry
High Pressure Group, Max Planck Institute for Chemistry, Max Planck Society;

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Eremets,  Mikhail
High Pressure Group, Max Planck Institute for Chemistry, Max Planck Society;

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Citation

Mozaffari, S., Balicas, L., Minkovv, V., Knyazev, D., Eremets, M., Einaga, M., et al. (2019). High Field Magnetotransport in Superconducting Hydrides under Pressure. Bulletin of the American Physical Society, 64: Abstract: B17.00006.


Cite as: http://hdl.handle.net/21.11116/0000-0007-8234-B
Abstract
Hydrogen sulfide forms metallic phase under high pressure above one million atmospheres and becomes superconducting at temperatures as high as 203K at 160GPa. Despite record-breaking Tc the basic properties of superconducting sulphur hydride/deuteride are found to be consistent with conventional Bardeen-Cooper-Schrieffer (BCS) theory. Early measurements of the superconducting phase diagram in magnetic fields up to 7T estimate upper critical fields of the order of 70T. We report magnetotransport studies of superconducting sulphur hydride in DC fields up to 35T and pulsed fields up to 65T. We find that upper critical field generally follow the Werthamer, Helfand and Hohenberg (WHH) formalism at low fields, while noticeable deviations from WHH appear at experimental limit of 65T.