Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
High-temperature superconductivity in sulfur hydride evidenced by alternating-current magnetic susceptibility
Umeå University, Faculty of Science and Technology, Department of Physics. State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun, China.ORCID iD: 0000-0003-0462-6206
Show others and affiliations
2019 (English)In: National Science Review, ISSN 2095-5138, Vol. 6, no 4, p. 713-718Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
Oxford University Press, 2019. Vol. 6, no 4, p. 713-718
Keywords [en]
high pressure, hydrides, superconductivity, Meissner effect
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:umu:diva-166418DOI: 10.1093/nsr/nwz061ISI: 000489296400019Scopus ID: 2-s2.0-85070102200OAI: oai:DiVA.org:umu-166418DiVA, id: diva2:1379245
Available from: 2019-12-16 Created: 2019-12-16 Last updated: 2019-12-16Bibliographically approved

Open Access in DiVA

fulltext(2720 kB)13 downloads
File information
File name FULLTEXT01.pdfFile size 2720 kBChecksum SHA-512
14e96a33eadfab15d4629492718dabb2c2fdcb45ab5e293f21d166643147aaf809734839ab3534908aa1f97416dd03215365701ce236ebdbe2bcf9cd677df088
Type fulltextMimetype application/pdf

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Sundqvist, Bertil
By organisation
Department of Physics
Condensed Matter Physics

Search outside of DiVA

GoogleGoogle Scholar
Total: 13 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 15 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf