Single-gap superconductivity in Mo8Ga41

被引：0
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作者：
Miroslav Marcin
Jozef Kačmarčík
Zuzana Pribulová
Michal Kopčík
Pavol Szabó
Ondrej Šofranko
Tomáš Samuely
Viliam Vaňo
Christophe Marcenat
Valeriy Yu. Verchenko
Andrei V. Shevelkov
Peter Samuely
机构：
[1] Institute of Experimental Physics SAS,Centre of Low Temperature Physics
[2] and Faculty of Science,Faculty of Electrical Engineering and Informatics, Department of Physics
[3] P. J. Šafárik University,Department of Chemistry
[4] Technical University,undefined
[5] SPSMS,undefined
[6] UMR-E9001,undefined
[7] CEA-INAC/UJF-Grenoble 1,undefined
[8] Lomonosov Moscow State University,undefined
[9] National Institute of Chemical Physics and Biophysics,undefined
来源：
Scientific Reports | / 9卷
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摘要：
In this paper, the potential existence of two-gap superconductivity in Mo8Ga41 is addressed in detail by means of thermodynamic and spectroscopic measurements. A combination of highly sensitive bulk and surface probes, specifically ac-calorimetry and scanning tunneling spectroscopy (STS), are utilized on the same piece of crystal and reveal the presence of only one intrinsic gap in the system featuring strong electron-phonon coupling. Minute traces of additional superconducting phases detected by STS and also in the heat capacity measured in high magnetic fields on a high-quality and seemingly single-phase crystal might mimic the multigap superconductivity of Mo8Ga41 suggested recently in several studies.
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