Andreev reflection study of the new magnetic superconductor M₃Sb₇: evidence for the gap anisotropy
We report the point-contact (PC) Andreev-reflection experiments on the new paramagnetic superconductor
 Mo₃Sb₇ for which we have observed strong distinctions in the PC spectra measured
 for different contact axis orientations. Analysis of the PC spectra in the framework of the&#x...
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| Veröffentlicht in: | Физика низких температур |
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| Datum: | 2007 |
| Hauptverfasser: | , , , , , |
| Format: | Artikel |
| Sprache: | Englisch |
| Veröffentlicht: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2007
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| Schlagworte: | |
| Online Zugang: | https://nasplib.isofts.kiev.ua/handle/123456789/127745 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | Andreev reflection study of the new magnetic superconductor M₃Sb₇: evidence for the gap anisotropy / V.M. Dmitriev, L.F. Rybaltchenko, E.V. Khristenko, L.A. Ishchenko, Z. Bukowski, R. Troć // Физика низких температур. — 2007. — Т. 33, № 4. — С. 399-405. — Бібліогр.: 16 назв. — англ. |
Institution
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Zusammenfassung: | We report the point-contact (PC) Andreev-reflection experiments on the new paramagnetic superconductor
Mo₃Sb₇ for which we have observed strong distinctions in the PC spectra measured
for different contact axis orientations. Analysis of the PC spectra in the framework of the
Blonder—Tinkham—Klapwijk theory has shown that the gap parameter is strongly anisotropic
varying over a very wide range depending on the contact orientation when the maximum max can
exceed at least 40 times the minimum min. For these and other reasons we suggest that Mo₃Sb₇ is
not a trivial BCS (s-wave) superconductor but rather has a (s+g )-wave or another unconventional
pairing symmetry.
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| ISSN: | 0132-6414 |