Matter and Radiation at Extremes, Volume. 7, Issue 4, 048401(2022)

Incompatibility of published ac magnetic susceptibility of a room temperature superconductor with measured raw data

J. E. Hirsch1、a) and D. van der Marel2
Author Affiliations
  • 1Department of Physics, University of California, San Diego, La Jolla, California 92093-0319, USA
  • 2Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest-Ansermet, 1211 Geneva, Switzerland
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    References(21)

    [1] E.Snideret?al.. Room-temperature superconductivity in a carbonaceous sulfur hydride. Nature, 586, 373(2020).

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    [7] J. E.Hirsch. Comment on ‘Room-temperature superconductivity in a carbonaceous sulfur hydride’ by Elliot Snider et al.. Europhys. Lett., 137, 36001(2022).

    [8] J. E.Hirsch. Disconnect between published ac magnetic susceptibility of a room temperature superconductor and measured raw data. Preprints, 2021, 2021120115.

    [9] J. E.Hirsch. Incompatibility of published ac magnetic susceptibility of a room temperature superconductor with measured raw data. Preprints, 2021, 2021120188.

    [11] J. J.Hamlin, J. S.Schilling, V. G.Tissen. Superconductivity at 17 K in yttrium metal under nearly hydrostatic pressures up to 89 GPa. Phys. Rev. B, 73, 094522(2006).

    [12] Y.Feng, T. F.Rosenbaum, D. M.Silevitch. A compact bellows-driven diamond anvil cell for high-pressure, low-temperature magnetic measurements. Rev. Sci. Instrum., 85, 033901(2014).

    [13] T.Matsuokaet?al.. Superconductivity of platinum hydride. Phys. Rev. B, 99, 144511(2019).

    [14] S.Deemyad, J. S.Schilling. Superconducting phase diagram of Li metal in nearly hydrostatic pressures up to 67 GPa. Phys. Rev. Lett., 91, 167001(2003).

    [15] M.Debessai, J. J.Hamlin, J. S.Schilling. Comparison of the pressure dependences of Tc in the trivalent d-electron superconductors Sc, Y, La, and Lu up to megabar pressures. Phys. Rev. B, 78, 064519(2008).

    [17] B.Ramshaw(2022).

    [19] [19] This equation was previously conjectured in Ref. 8 from the fact that the noise in the data is significantly smaller than in the raw data.

    [20] M.Debessai, J. J.Hamlin, T.Matsuoka, J. S.Schilling, K.Shimizu. Pressure-induced superconducting state of europium metal at low temperatures. Phys. Rev. Lett., 102, 197002(2009).

    [21] M.Debessai, J. J.Hamlin, T.Matsuoka, J. S.Schilling, K.Shimizu. Retraction: Pressure-induced superconducting state of europium metal at low temperatures [Phys. Rev. Lett. 102, 197002 (2009)]. Phys. Rev. Lett., 127, 269902(2021).

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    J. E. Hirsch, D. van der Marel. Incompatibility of published ac magnetic susceptibility of a room temperature superconductor with measured raw data[J]. Matter and Radiation at Extremes, 2022, 7(4): 048401

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    Paper Information

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    Received: Feb. 16, 2022

    Accepted: Jun. 1, 2022

    Published Online: Aug. 8, 2022

    The Author Email: J. E. Hirsch (jhirsch@ucsd.edu)

    DOI:10.1063/5.0088429

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