Andreev reflection study of a new magnetic superconductor Mo3Sb7 in magnetic field
Andreev reflection in contacts based on a magnetic superconductorMo3Sb7in magnetic field has been investigated by the point-contact method. It is found that the behavior of the order parameter in the magnetic field Δ(H) is essentially dependent on the value of Δ, which varies widely (Δ(0,0) ≈ 0.01-0...
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| Дата: | 2007 |
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| Автори: | , , , , , |
| Формат: | Стаття |
| Мова: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2007
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| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/7764 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Andreev reflection study of a new magnetic superconductor Mo3Sb7 in magnetic field / V.M. Dmitriev, L.F. Rybaltchenko, L.A. Ishchenko, E.V. Khristenko, Z. Bukowski, R. Troć // Физика низких температур. — 2007. — Т. 33, № 12. — С. 1331-1337. — Бібліогр.: 24 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
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irk-123456789-77642010-04-13T12:01:34Z Andreev reflection study of a new magnetic superconductor Mo3Sb7 in magnetic field Dmitriev, V.M. Rybaltchenko, L.F. Ishchenko, L.A. Khristenko, E.V. Bukowski, Z. Troć, R. Сверхпроводимость, в том числе высокотемпературная Andreev reflection in contacts based on a magnetic superconductorMo3Sb7in magnetic field has been investigated by the point-contact method. It is found that the behavior of the order parameter in the magnetic field Δ(H) is essentially dependent on the value of Δ, which varies widely (Δ(0,0) ≈ 0.01-0.31meV) for different contacts at practically invariant Tc. At high the dependence max(H)deviates slightly from the theoretical prediction applicable under the point-contact conditions. As the order parameter decreases, the deviation starts to increase and becomes very large when Δ approaches its minimum. Proceeding from the results obtained in this study and from the temperature measurements on Mo3Sb7performed formerly, we are inclined as before to assign the compound to the class of superconductors with anisotropic gap function. So, in no way can it be considered as conventional BCS-type superconductor. The upper critical field Hc2 ≈16.5 kOe found here is close to that obtained from magnetization measurements in another study. According to the estimation performed, the pair-breaking effect of the Pauli paramagnetism is rather weak in Mo3Sb7. 2007 Article Andreev reflection study of a new magnetic superconductor Mo3Sb7 in magnetic field / V.M. Dmitriev, L.F. Rybaltchenko, L.A. Ishchenko, E.V. Khristenko, Z. Bukowski, R. Troć // Физика низких температур. — 2007. — Т. 33, № 12. — С. 1331-1337. — Бібліогр.: 24 назв. — англ. 0132-6414 http://dspace.nbuv.gov.ua/handle/123456789/7764 en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| topic |
Сверхпроводимость, в том числе высокотемпературная Сверхпроводимость, в том числе высокотемпературная |
| spellingShingle |
Сверхпроводимость, в том числе высокотемпературная Сверхпроводимость, в том числе высокотемпературная Dmitriev, V.M. Rybaltchenko, L.F. Ishchenko, L.A. Khristenko, E.V. Bukowski, Z. Troć, R. Andreev reflection study of a new magnetic superconductor Mo3Sb7 in magnetic field |
| description |
Andreev reflection in contacts based on a magnetic superconductorMo3Sb7in magnetic field has been investigated by the point-contact method. It is found that the behavior of the order parameter in the magnetic field Δ(H) is essentially dependent on the value of Δ, which varies widely (Δ(0,0) ≈ 0.01-0.31meV) for different contacts at practically invariant Tc. At high the dependence max(H)deviates slightly from the theoretical prediction applicable under the point-contact conditions. As the order parameter decreases, the deviation starts to increase and becomes very large when Δ approaches its minimum. Proceeding from the results obtained in this study and from the temperature measurements on Mo3Sb7performed formerly, we are inclined as before to assign the compound to the class of superconductors with anisotropic gap function. So, in no way can it be considered as conventional BCS-type superconductor. The upper critical field Hc2 ≈16.5 kOe found here is close to that obtained from magnetization measurements in another study. According to the estimation performed, the pair-breaking effect of the Pauli paramagnetism is rather weak in Mo3Sb7. |
| format |
Article |
| author |
Dmitriev, V.M. Rybaltchenko, L.F. Ishchenko, L.A. Khristenko, E.V. Bukowski, Z. Troć, R. |
| author_facet |
Dmitriev, V.M. Rybaltchenko, L.F. Ishchenko, L.A. Khristenko, E.V. Bukowski, Z. Troć, R. |
| author_sort |
Dmitriev, V.M. |
| title |
Andreev reflection study of a new magnetic superconductor Mo3Sb7 in magnetic field |
| title_short |
Andreev reflection study of a new magnetic superconductor Mo3Sb7 in magnetic field |
| title_full |
Andreev reflection study of a new magnetic superconductor Mo3Sb7 in magnetic field |
| title_fullStr |
Andreev reflection study of a new magnetic superconductor Mo3Sb7 in magnetic field |
| title_full_unstemmed |
Andreev reflection study of a new magnetic superconductor Mo3Sb7 in magnetic field |
| title_sort |
andreev reflection study of a new magnetic superconductor mo3sb7 in magnetic field |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| publishDate |
2007 |
| topic_facet |
Сверхпроводимость, в том числе высокотемпературная |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/7764 |
| citation_txt |
Andreev reflection study of a new magnetic superconductor Mo3Sb7 in magnetic field / V.M. Dmitriev, L.F. Rybaltchenko, L.A. Ishchenko, E.V. Khristenko, Z. Bukowski, R. Troć // Физика низких температур. — 2007. — Т. 33, № 12. — С. 1331-1337. — Бібліогр.: 24 назв. — англ. |
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| first_indexed |
2023-10-18T16:38:16Z |
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2023-10-18T16:38:16Z |
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