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Title: Superconducting phase diagram of H 3S under high magnetic fields

Abstract

The discovery of superconductivity at 260 K in hydrogen-rich compounds like LaH 10 re-invigorated the quest for room temperature superconductivity. Here, we report the temperature dependence of the upper critical fields μ 0H c2(T) of superconducting H 3S under a record-high combination of applied pressures up to 160 GPa and fields up to 65 T. We find that H c2(T) displays a linear dependence on temperature over an extended range as found in multigap or in strongly-coupled superconductors, thus deviating from conventional Werthamer, Helfand, and Hohenberg (WHH) formalism. The best fit of H c2(T) to the WHH formalism yields negligible values for the Maki parameter α and the spin–orbit scattering constant λ SO. However, H c2(T) is well-described by a model based on strong coupling superconductivity with a coupling constant λ ~ 2. We conclude that H 3S behaves as a strong-coupled orbital-limited superconductor over the entire range of temperatures and fields used for our measurements.

Authors:
 [1];  [2];  [3];  [3];  [3];  [2];  [4]; ORCiD logo [4];  [3]; ORCiD logo [1]; ORCiD logo [2]
  1. Florida State Univ., Tallahassee, FL (United States). National High Magnetic Field Lab. (MagLab)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  3. Max Planck Inst. for Chemistry, Mainz (Germany)
  4. Osaka Univ., Toyonaka (Japan). KYOKUGEN. Graduate School of Engineering Science
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Florida State Univ., Tallahassee, FL (United States); Osaka Univ., Toyonaka (Japan)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Science Foundation (NSF); Japan Society for the Promotion of Science (JSPS)
OSTI Identifier:
1542848
Alternate Identifier(s):
OSTI ID: 1594446
Report Number(s):
LA-UR-19-20960
Journal ID: ISSN 2041-1723
Grant/Contract Number:  
89233218CNA000001; SC0002613; DMR-1644779; 26000006
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 10; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Mozaffari, Shirin, Sun, Dan, Minkov, Vasily S., Drozdov, Alexander P., Knyazev, Dmitry, Betts, Jonathan B., Einaga, Mari, Shimizu, Katsuya, Eremets, Mikhail I., Balicas, Luis, and Balakirev, Fedor F. Superconducting phase diagram of H3S under high magnetic fields. United States: N. p., 2019. Web. doi:10.1038/s41467-019-10552-y.
Mozaffari, Shirin, Sun, Dan, Minkov, Vasily S., Drozdov, Alexander P., Knyazev, Dmitry, Betts, Jonathan B., Einaga, Mari, Shimizu, Katsuya, Eremets, Mikhail I., Balicas, Luis, & Balakirev, Fedor F. Superconducting phase diagram of H3S under high magnetic fields. United States. doi:10.1038/s41467-019-10552-y.
Mozaffari, Shirin, Sun, Dan, Minkov, Vasily S., Drozdov, Alexander P., Knyazev, Dmitry, Betts, Jonathan B., Einaga, Mari, Shimizu, Katsuya, Eremets, Mikhail I., Balicas, Luis, and Balakirev, Fedor F. Fri . "Superconducting phase diagram of H3S under high magnetic fields". United States. doi:10.1038/s41467-019-10552-y. https://www.osti.gov/servlets/purl/1542848.
@article{osti_1542848,
title = {Superconducting phase diagram of H3S under high magnetic fields},
author = {Mozaffari, Shirin and Sun, Dan and Minkov, Vasily S. and Drozdov, Alexander P. and Knyazev, Dmitry and Betts, Jonathan B. and Einaga, Mari and Shimizu, Katsuya and Eremets, Mikhail I. and Balicas, Luis and Balakirev, Fedor F.},
abstractNote = {The discovery of superconductivity at 260 K in hydrogen-rich compounds like LaH10 re-invigorated the quest for room temperature superconductivity. Here, we report the temperature dependence of the upper critical fields μ0Hc2(T) of superconducting H3S under a record-high combination of applied pressures up to 160 GPa and fields up to 65 T. We find that Hc2(T) displays a linear dependence on temperature over an extended range as found in multigap or in strongly-coupled superconductors, thus deviating from conventional Werthamer, Helfand, and Hohenberg (WHH) formalism. The best fit of Hc2(T) to the WHH formalism yields negligible values for the Maki parameter α and the spin–orbit scattering constant λSO. However, Hc2(T) is well-described by a model based on strong coupling superconductivity with a coupling constant λ ~ 2. We conclude that H3S behaves as a strong-coupled orbital-limited superconductor over the entire range of temperatures and fields used for our measurements.},
doi = {10.1038/s41467-019-10552-y},
journal = {Nature Communications},
number = ,
volume = 10,
place = {United States},
year = {2019},
month = {6}
}

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Figures / Tables:

Fig. 1 Fig. 1: Resistive transition towards the superconducting state. Resistance R as a function of the temperature T for two DACs containing H3S samples under pressures p= 155 GPa and 160 GPa. Red line is a fit to R = R0 + AT2. Notice that the Tc for the 155 GPamore » sample shifts slightly to higher values« less

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    Works referencing / citing this record:

    Classifying Induced Superconductivity in Atomically Thin Dirac-Cone Materials
    journal, September 2019


      Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.