Some novel effects in superconducting nanojunctions
In this paper we address several new developments in the theory of dc Josephson effect in
 superconducting weak links. We analyze an interplay between quantum interference effects and
 Andreev reflection in SNS nanojunctions with insulating barriers and demonstrate that these effects...
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| Date: | 2004 |
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| Main Author: | |
| Format: | Article |
| Language: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2004
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| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/119831 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Some novel effects in superconducting nanojunctions / A.D. Zaikin // Физика низких температур. — 2004. — Т. 30, № 7-8. — С. 756-769. — Бібліогр.: 55 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862734072974934016 |
|---|---|
| author | Zaikin, A.D. |
| author_facet | Zaikin, A.D. |
| citation_txt | Some novel effects in superconducting nanojunctions / A.D. Zaikin // Физика низких температур. — 2004. — Т. 30, № 7-8. — С. 756-769. — Бібліогр.: 55 назв. — англ. |
| collection | DSpace DC |
| description | In this paper we address several new developments in the theory of dc Josephson effect in
superconducting weak links. We analyze an interplay between quantum interference effects and
Andreev reflection in SNS nanojunctions with insulating barriers and demonstrate that these effects
may qualitatively modify the Josephson current in such structures. We also investigate an impact
of the parity effect on persistent currents in superconducting nanorings interrupted by a quantum
point contact (QPC). In the limit of zero temperature and for the odd number of electrons in
the ring we predict complete suppression of the supercurrent across QPC with one conducting
mode. In nanorings with SNS junctions a π-state can occur for the odd number of electrons.
Changing this number from even to odd yields spontaneous supercurrent in the ground state of
such rings without any externally applied magnetic flux.
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| first_indexed | 2025-12-07T19:40:32Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-119831 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-12-07T19:40:32Z |
| publishDate | 2004 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Zaikin, A.D. 2017-06-10T06:35:26Z 2017-06-10T06:35:26Z 2004 Some novel effects in superconducting nanojunctions / A.D. Zaikin // Физика низких температур. — 2004. — Т. 30, № 7-8. — С. 756-769. — Бібліогр.: 55 назв. — англ. 0132-6414 PACS: 74.50.+r, 74.80.Fp https://nasplib.isofts.kiev.ua/handle/123456789/119831 In this paper we address several new developments in the theory of dc Josephson effect in
 superconducting weak links. We analyze an interplay between quantum interference effects and
 Andreev reflection in SNS nanojunctions with insulating barriers and demonstrate that these effects
 may qualitatively modify the Josephson current in such structures. We also investigate an impact
 of the parity effect on persistent currents in superconducting nanorings interrupted by a quantum
 point contact (QPC). In the limit of zero temperature and for the odd number of electrons in
 the ring we predict complete suppression of the supercurrent across QPC with one conducting
 mode. In nanorings with SNS junctions a π-state can occur for the odd number of electrons.
 Changing this number from even to odd yields spontaneous supercurrent in the ground state of
 such rings without any externally applied magnetic flux. The author gratefully acknowledges collaboration
 and numerous discussions with A.V. Galaktionov,
 D.S. Golubev, and S.V. Sharov. This work is part of
 the Kompetenznetz «Funktionelle Nanostructuren»
 supported by the Landestiftung Baden-Württemberg
 gGmbH. This work has also been supported by the
 European Community’s Framework Programme
 NMP4-CT-2003-505457 ULTRA-1D “Experimental
 and theoretical investigation of electron transport in
 ultra-narrow 1-dimensional nanostructures”. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Сверхпроводимость и мезоскопические структуры Some novel effects in superconducting nanojunctions Article published earlier |
| spellingShingle | Some novel effects in superconducting nanojunctions Zaikin, A.D. Сверхпроводимость и мезоскопические структуры |
| title | Some novel effects in superconducting nanojunctions |
| title_full | Some novel effects in superconducting nanojunctions |
| title_fullStr | Some novel effects in superconducting nanojunctions |
| title_full_unstemmed | Some novel effects in superconducting nanojunctions |
| title_short | Some novel effects in superconducting nanojunctions |
| title_sort | some novel effects in superconducting nanojunctions |
| topic | Сверхпроводимость и мезоскопические структуры |
| topic_facet | Сверхпроводимость и мезоскопические структуры |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/119831 |
| work_keys_str_mv | AT zaikinad somenoveleffectsinsuperconductingnanojunctions |