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 may qualitativ...
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| Дата: | 2004 |
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| Автор: | |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2004
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| Назва видання: | Физика низких температур |
| Теми: | |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/119831 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Some novel effects in superconducting nanojunctions / A.D. Zaikin // Физика низких температур. — 2004. — Т. 30, № 7-8. — С. 756-769. — Бібліогр.: 55 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
irk-123456789-119831 |
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dspace |
| spelling |
irk-123456789-1198312017-06-11T03:04:19Z Some novel effects in superconducting nanojunctions Zaikin, A.D. Сверхпроводимость и мезоскопические структуры 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. 2004 Article 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 http://dspace.nbuv.gov.ua/handle/123456789/119831 en Физика низких температур 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 и мезоскопические структуры Сверхпроводимость и мезоскопические структуры |
| spellingShingle |
Сверхпроводимость и мезоскопические структуры Сверхпроводимость и мезоскопические структуры Zaikin, A.D. Some novel effects in superconducting nanojunctions Физика низких температур |
| 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. |
| format |
Article |
| author |
Zaikin, A.D. |
| author_facet |
Zaikin, A.D. |
| author_sort |
Zaikin, A.D. |
| title |
Some novel effects in superconducting nanojunctions |
| title_short |
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_sort |
some novel effects in superconducting nanojunctions |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| publishDate |
2004 |
| topic_facet |
Сверхпроводимость и мезоскопические структуры |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/119831 |
| 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. |
| series |
Физика низких температур |
| work_keys_str_mv |
AT zaikinad somenoveleffectsinsuperconductingnanojunctions |
| first_indexed |
2023-10-18T20:35:32Z |
| last_indexed |
2023-10-18T20:35:32Z |
| _version_ |
1796150602076520448 |