Observation of Andreev reflections and Josephson effects in point contacts between conventional and the heavy-fennion superconductor URu₂Si₂
We have measured the dV/dI vs. V characteristics of point contacts between the heavy-fermion superconductor URu₂Si₂ and the conventional superconductors Zn and NbTi. Contacts between URu₂Si₂ and Zn behave like a superconductor—normal metal—superconductor junction with a thick normal layer in the hea...
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| Опубліковано в: : | Физика низких температур |
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| Дата: | 1995 |
| Автори: | , , , , , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
1995
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Observation of Andreev reflections and Josephson effects in point contacts between conventional and the heavy-fennion superconductor URu₂Si₂ / Yu.G. Naidyuk, A. Nowack, E. Ulbrich, A. Freimuth, W. Schlabitz, I.K. Yanson, A.A. Menovsky // Физика низких температур. — 1995. — Т. 21, № 3. — С. 340-342. — Бібліогр.: 7 назв. — англ. |
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Naidyuk, Yu.G. Nowack, A. Ulbrich, E. Freimuth, A. Schlabitz, W. Yanson, I.K. Menovsky, A.A. 2021-01-31T16:52:16Z 2021-01-31T16:52:16Z 1995 Observation of Andreev reflections and Josephson effects in point contacts between conventional and the heavy-fennion superconductor URu₂Si₂ / Yu.G. Naidyuk, A. Nowack, E. Ulbrich, A. Freimuth, W. Schlabitz, I.K. Yanson, A.A. Menovsky // Физика низких температур. — 1995. — Т. 21, № 3. — С. 340-342. — Бібліогр.: 7 назв. — англ. 0132-6414 https://nasplib.isofts.kiev.ua/handle/123456789/175273 538.945 We have measured the dV/dI vs. V characteristics of point contacts between the heavy-fermion superconductor URu₂Si₂ and the conventional superconductors Zn and NbTi. Contacts between URu₂Si₂ and Zn behave like a superconductor—normal metal—superconductor junction with a thick normal layer in the heavy-fermion part of the contact and show Andreev-reflection type structures related to both the heavy-fermion and the conventional superconductors. In contrast, contacts between URu₂Si₂ and NbTi become superconducting at low bias currents. The data indicate that proximity induced superconductivity is important for the coupling of the two types of superconductivity. With such contacts we also fabricated a closed-loop setup with two NbTi contacts on a URu₂Si₂ sample, which showed SQUID oscillation in a small magnetic field. We wish to thank Prof. Dr. H. Micklitz for helpful discussions. Y. G. N. thankfully acknowledges the support of the DFG through SFB 341 during his stay at the II Physical Institute of the University of Koln and wishes to thank Prof. Dr. H. v. Lohneysen and A. v. Humboldt-Foundation for the possibility to continue these investigations at the Physical Institute of the University of Karlsruhe. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Письма pедактоpу Observation of Andreev reflections and Josephson effects in point contacts between conventional and the heavy-fennion superconductor URu₂Si₂ Article published earlier |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| title |
Observation of Andreev reflections and Josephson effects in point contacts between conventional and the heavy-fennion superconductor URu₂Si₂ |
| spellingShingle |
Observation of Andreev reflections and Josephson effects in point contacts between conventional and the heavy-fennion superconductor URu₂Si₂ Naidyuk, Yu.G. Nowack, A. Ulbrich, E. Freimuth, A. Schlabitz, W. Yanson, I.K. Menovsky, A.A. Письма pедактоpу |
| title_short |
Observation of Andreev reflections and Josephson effects in point contacts between conventional and the heavy-fennion superconductor URu₂Si₂ |
| title_full |
Observation of Andreev reflections and Josephson effects in point contacts between conventional and the heavy-fennion superconductor URu₂Si₂ |
| title_fullStr |
Observation of Andreev reflections and Josephson effects in point contacts between conventional and the heavy-fennion superconductor URu₂Si₂ |
| title_full_unstemmed |
Observation of Andreev reflections and Josephson effects in point contacts between conventional and the heavy-fennion superconductor URu₂Si₂ |
| title_sort |
observation of andreev reflections and josephson effects in point contacts between conventional and the heavy-fennion superconductor uru₂si₂ |
| author |
Naidyuk, Yu.G. Nowack, A. Ulbrich, E. Freimuth, A. Schlabitz, W. Yanson, I.K. Menovsky, A.A. |
| author_facet |
Naidyuk, Yu.G. Nowack, A. Ulbrich, E. Freimuth, A. Schlabitz, W. Yanson, I.K. Menovsky, A.A. |
| topic |
Письма pедактоpу |
| topic_facet |
Письма pедактоpу |
| publishDate |
1995 |
| language |
English |
| container_title |
Физика низких температур |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| format |
Article |
| description |
We have measured the dV/dI vs. V characteristics of point contacts between the heavy-fermion superconductor URu₂Si₂ and the conventional superconductors Zn and NbTi. Contacts between URu₂Si₂ and Zn behave like a superconductor—normal metal—superconductor junction with a thick normal layer in the heavy-fermion part of the contact and show Andreev-reflection type structures related to both the heavy-fermion and the conventional superconductors. In contrast, contacts between URu₂Si₂ and NbTi become superconducting at low bias currents. The data indicate that proximity induced superconductivity is important for the coupling of the two types of superconductivity. With such contacts we also fabricated a closed-loop setup with two NbTi contacts on a URu₂Si₂ sample, which showed SQUID oscillation in a small magnetic field.
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| issn |
0132-6414 |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/175273 |
| citation_txt |
Observation of Andreev reflections and Josephson effects in point contacts between conventional and the heavy-fennion superconductor URu₂Si₂ / Yu.G. Naidyuk, A. Nowack, E. Ulbrich, A. Freimuth, W. Schlabitz, I.K. Yanson, A.A. Menovsky // Физика низких температур. — 1995. — Т. 21, № 3. — С. 340-342. — Бібліогр.: 7 назв. — англ. |
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