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- Title
Single-gap superconductivity in Mo<sub>8</sub>Ga<sub>41</sub>.
- Authors
Marcin, Miroslav; Kačmarčík, Jozef; Pribulová, Zuzana; Kopčík, Michal; Szabó, Pavol; Šofranko, Ondrej; Samuely, Tomáš; Vaňo, Viliam; Marcenat, Christophe; Verchenko, Valeriy Yu.; Shevelkov, Andrei V.; Samuely, Peter
- Abstract
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.
- Subjects
SUPERCONDUCTIVITY; THERMODYNAMICS; SCANNING tunneling microscopy; MAGNETIC fields; SPECTROMETRY
- Publication
Scientific Reports, 2019, Vol 9, Issue 1, pN.PAG
- ISSN
2045-2322
- Publication type
Article
- DOI
10.1038/s41598-019-49846-y