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  One or two gaps in Mo8Ga41 superconductor? Local Hall-probe magnetometry study

Marcin, M., Pribulova, Z., Kacmarcik, J., Medvecká, Z., Klein, T., Verchenko, V. Y., et al. (2021). One or two gaps in Mo8Ga41 superconductor? Local Hall-probe magnetometry study. Superconductor Science and Technology, 34(3): 035017, pp. 1-5. doi:10.1088/1361-6668/abd5f3.

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 Creators:
Marcin, M.1, Author
Pribulova, Z.1, Author
Kacmarcik, J.1, Author
Medvecká, Z.2, Author           
Klein, T.1, Author
Verchenko, V. Yu.1, Author
Cambel, V1, Author
Šoltýs, J.1, Author
Samuely, P.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Physics of Unconventional Metals and Superconductors, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_2466700              

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 Abstract: The magnetization properties of the endohedral cluster superconductor Mo8Ga41 are studied by sensitive Hall-probe magnetometry. The temperature dependence of the lower critical magnetic field H-c1 is obtained and compared to theoretical models accounting for single-gap and two-gap superconductivity. Data can be described by both models with minor differences. These results are confronted with our previous measurements which evidence that the system is inherently single-gap s-wave superconductor but minor additional phases are present also in seemingly perfect samples. We discuss how presence of such additional phases with varying size of the penetration depth and H-c1 field is reflected in magnetization measurements which could lead to misinterpretation of the multigap superconductivity in Mo8Ga41.

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Language(s): eng - English
 Dates: 2021-02-022021-02-02
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1088/1361-6668/abd5f3
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Title: Superconductor Science and Technology
Source Genre: Journal
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Publ. Info: Bristol : IOP Pub.
Pages: - Volume / Issue: 34 (3) Sequence Number: 035017 Start / End Page: 1 - 5 Identifier: ISSN: 0953-2048
CoNE: https://pure.mpg.de/cone/journals/resource/954925575984