{"id":"doi:10.1093/nsr/nwz061","kind":"article","title":"High-temperature superconductivity in sulfur hydride evidenced by alternating-current magnetic susceptibility","authors":["Xiaoli Huang","Xin Wang","Defang Duan","Bertil Sundqvist","Xin Li","Yanping Huang","Hongyu Yu","Fangfei Li","Qiang Zhou","Bingbing Liu","Tian Shu Cui"],"author_count":11,"year":2019,"published":"2019-05-08","venue":"National Science Review","cited_by":97,"doi":"10.1093/nsr/nwz061","arxiv_id":null,"nct_id":null,"source_url":"https://doi.org/10.1093/nsr/nwz061","archive_url":"https://space-kitty.com/papers/doi:10.1093/nsr/nwz061","updated":null,"pmid":"34691926","pmcid":null,"openalex_id":"W3103615892","pdf_url":"https://academic.oup.com/nsr/article-pdf/6/4/713/30336671/nwz061.pdf","abstract":"ABSTRACT The search for high-temperature superconductivity is one of the research frontiers in physics. In the sulfur hydride system, an extremely high Tc (∼200 K) has been recently developed at pressure. However, the Meissner effect measurement above megabar pressures is still a great challenge. Here, we report the superconductivity identification of sulfur hydride at pressure, employing an in situ alternating-current magnetic susceptibility technique. We determine the superconducting phase diagram, finding that superconductivity suddenly appears at 117 GPa and Tc reaches 183 K at 149 GPa before decreasing monotonically with increasing pressure. By means of theoretical calculations, we elucidate the variation of Tc in the low-pressure region in terms of the changing stoichiometry of sulfur hydride and the further decrease in Tc owing to a drop in the electron–phonon interaction parameter λ. This work provides a new insight into clarifying superconducting phenomena and anchoring the superconducting phase diagram in the hydrides.","abstract_license":"CC-BY (publisher license, via OpenAlex)","license":"cc-by","is_open_access":true,"retracted":false,"peer_reviewed":null,"categories":["High-pressure geophysics and materials"],"details":null,"provenance":"openalex","attribution":"Abstract of \"High-temperature superconductivity in sulfur hydride evidenced by alternating-current magnetic susceptibility\" by Xiaoli Huang, Xin Wang, Defang Duan et al., https://doi.org/10.1093/nsr/nwz061, used under its Creative Commons Attribution license (CC-BY); markup removed, otherwise unmodified.","topics":[{"slug":"hydride-superconductors","name":"Superconducting Hydrides Under Pressure","domain_slug":"superconductivity"}],"cited_in_dossiers":[]}