Influence of electron-electron interactions on supercurrent in SNS structures
We consider a superconductor-normal quantum dot-superconductor structure in which the number of electrons in the dot can be controlled by a gate voltage. We study the effect of electron-electron interactions on the supercurrent between the two superconductors. Using both an analytic model and numeri...
Gespeichert in:
| Datum: | 2003 |
|---|---|
| Hauptverfasser: | , , , , |
| Format: | Artikel |
| Sprache: | English |
| Veröffentlicht: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2003
|
| Schriftenreihe: | Физика низких температур |
| Schlagworte: | |
| Online Zugang: | http://dspace.nbuv.gov.ua/handle/123456789/128881 |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | Influence of electron-electron interactions on supercurrent in SNS structures / K. Engström, J. Kinaret, R.I. Shekhter, M. Puska H. Saarikoski // Физика низких температур. — 2003. — Т. 29, № 7. — С. 733-739. — Бібліогр.: 33 назв. — англ. |
Institution
Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
irk-123456789-128881 |
|---|---|
| record_format |
dspace |
| fulltext |
|
| spelling |
irk-123456789-1288812018-01-15T03:03:30Z Influence of electron-electron interactions on supercurrent in SNS structures Engström, K. Kinaret, J. Shekhter, R.I. Puska, H. Saarikoski, M. Свеpхпpоводимость, в том числе высокотемпеpатуpная We consider a superconductor-normal quantum dot-superconductor structure in which the number of electrons in the dot can be controlled by a gate voltage. We study the effect of electron-electron interactions on the supercurrent between the two superconductors. Using both an analytic model and numerical density functional calculations, we find that Coulomb interactions may serve to make the system quantum mechanically more "rigid", i.e., increasing its sensitivity to phase gradients, hence enhancing the supercurrent through the structure, especially at small phase differences. Accordingly, we find that in this structure the supercurrent can be controlled by the gate voltage. 2003 Article Influence of electron-electron interactions on supercurrent in SNS structures / K. Engström, J. Kinaret, R.I. Shekhter, M. Puska H. Saarikoski // Физика низких температур. — 2003. — Т. 29, № 7. — С. 733-739. — Бібліогр.: 33 назв. — англ. 0132-6414 PACS: 74.80.Fp, 73.63.Kv, 85.25.Cp, 74.50.+r http://dspace.nbuv.gov.ua/handle/123456789/128881 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 |
Свеpхпpоводимость, в том числе высокотемпеpатуpная Свеpхпpоводимость, в том числе высокотемпеpатуpная |
| spellingShingle |
Свеpхпpоводимость, в том числе высокотемпеpатуpная Свеpхпpоводимость, в том числе высокотемпеpатуpная Engström, K. Kinaret, J. Shekhter, R.I. Puska, H. Saarikoski, M. Influence of electron-electron interactions on supercurrent in SNS structures Физика низких температур |
| description |
We consider a superconductor-normal quantum dot-superconductor structure in which the number of electrons in the dot can be controlled by a gate voltage. We study the effect of electron-electron interactions on the supercurrent between the two superconductors. Using both an analytic model and numerical density functional calculations, we find that Coulomb interactions may serve to make the system quantum mechanically more "rigid", i.e., increasing its sensitivity to phase gradients, hence enhancing the supercurrent through the structure, especially at small phase differences. Accordingly, we find that in this structure the supercurrent can be controlled by the gate voltage. |
| format |
Article |
| author |
Engström, K. Kinaret, J. Shekhter, R.I. Puska, H. Saarikoski, M. |
| author_facet |
Engström, K. Kinaret, J. Shekhter, R.I. Puska, H. Saarikoski, M. |
| author_sort |
Engström, K. |
| title |
Influence of electron-electron interactions on supercurrent in SNS structures |
| title_short |
Influence of electron-electron interactions on supercurrent in SNS structures |
| title_full |
Influence of electron-electron interactions on supercurrent in SNS structures |
| title_fullStr |
Influence of electron-electron interactions on supercurrent in SNS structures |
| title_full_unstemmed |
Influence of electron-electron interactions on supercurrent in SNS structures |
| title_sort |
influence of electron-electron interactions on supercurrent in sns structures |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| publishDate |
2003 |
| topic_facet |
Свеpхпpоводимость, в том числе высокотемпеpатуpная |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/128881 |
| citation_txt |
Influence of electron-electron interactions on supercurrent in SNS structures / K. Engström, J. Kinaret, R.I. Shekhter, M. Puska H. Saarikoski // Физика низких температур. — 2003. — Т. 29, № 7. — С. 733-739. — Бібліогр.: 33 назв. — англ. |
| series |
Физика низких температур |
| work_keys_str_mv |
AT engstromk influenceofelectronelectroninteractionsonsupercurrentinsnsstructures AT kinaretj influenceofelectronelectroninteractionsonsupercurrentinsnsstructures AT shekhterri influenceofelectronelectroninteractionsonsupercurrentinsnsstructures AT puskah influenceofelectronelectroninteractionsonsupercurrentinsnsstructures AT saarikoskim influenceofelectronelectroninteractionsonsupercurrentinsnsstructures |
| first_indexed |
2025-07-09T10:09:25Z |
| last_indexed |
2025-07-09T10:09:25Z |
| _version_ |
1837163628140167168 |