Abstract
AbstractReference [1] presents evidence for magnetic field screening and “subtle” evidence for magnetic field expulsion in hydrides under high pressure, which is argued to support the claim that these materials are high temperature superconductors. We point out here that data presented in different figures of Ref. [1] are inconsistent (i) with one another, (ii) with other work by the same authors on the same samples [2, 3], and (iii) with the expected behavior of standard superconductors. This suggests that these magnetic phenomena reported for these materials are not associated with superconductivity, undermining the claim that these materials are high temperature superconductors.
Publisher
Springer Science and Business Media LLC
Subject
Condensed Matter Physics,Electronic, Optical and Magnetic Materials
Reference21 articles.
1. Minkov, V. et al.: Magnetic field screening in hydrogen-rich high-temperature superconductors. Nat. Commun. 13, 3194 (2022). https://www.nature.com/articles/s41467-022-30782-x
2. Minkov, V.S. et al.: The Meissner effect in high-temperature hydrogen-rich superconductors under high pressure. Res. Sq. (2021). https://doi.org/10.21203/rs.3.rs-936317/v1. https://www.researchsquare.com/article/rs-936317/v1
3. Minkov, V.S., Ksenofontov, V., Budko, S.L., Talantsev, E.F., Eremets, M.I.: Trapped magnetic flux in hydrogen-rich high-temperature superconductors. (2022). https://arxiv.org/abs/2206.14108v2
4. Drozdov, A.P., Eremets, M.I., Troyan, I.A., Ksenofontov, V., Shylin, S.I.: Conventional superconductivity at 203 kelvin at high pressures in the sulfur hydride system. Nature 525, 73–76 (2015). https://www.nature.com/articles/nature14964
5. Troyan, I.A. et al.: High-temperature superconductivity in hydrides. Phys. Usp. 65, 748–761 (2022). https://ufn.ru/en/articles/2022/7/h/
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