Single-gap superconductivity in Mo8Ga41

被引：0

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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