Voltage-driven superconducting weak link as a refrigerator for cooling of nanomechanical vibrations
We consider a new type of cooling mechanism for a suspended nanowire acting as a weak link between two superconductive electrodes. By applying a bias voltage over the system, we show that the system can be viewed as a refrigerator for the nanomechanical vibrations, where energy is continuously trans...
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| Veröffentlicht in: | Физика низких температур |
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| Datum: | 2010 |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2010
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | Voltage-driven superconducting weak link as a refrigerator for cooling of nanomechanical vibrations / G. Sonne, M.E. Peña-Aza, R. I. Shekhter, L.Y. Gorelik, M. Jonson // Физика низких температур. — 2010. — Т. 36, № 10-11. — С. 1128–1137. — Бібліогр.: 23 назв. — англ. |
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Sonne, G. Peña-Aza, M.E. Shekhter, R. I. Gorelik, L.Y. Jonson, M. 2017-05-24T05:11:16Z 2017-05-24T05:11:16Z 2010 Voltage-driven superconducting weak link as a refrigerator for cooling of nanomechanical vibrations / G. Sonne, M.E. Peña-Aza, R. I. Shekhter, L.Y. Gorelik, M. Jonson // Физика низких температур. — 2010. — Т. 36, № 10-11. — С. 1128–1137. — Бібліогр.: 23 назв. — англ. 0132-6414 PACS: 73.23.–b, 74.45.+c, 85.85.+j https://nasplib.isofts.kiev.ua/handle/123456789/117514 We consider a new type of cooling mechanism for a suspended nanowire acting as a weak link between two superconductive electrodes. By applying a bias voltage over the system, we show that the system can be viewed as a refrigerator for the nanomechanical vibrations, where energy is continuously transferred from the vibrational degrees of freedom to the extended quasiparticle states in the leads through the periodic modulation of the inter-Andreev level separation. The necessary coupling between the electronic and mechanical degrees of freedom responsible for this energy-transfer can be achieved both with an external magnetic or electrical field, and is shown to lead to an effective cooling of the vibrating nanowire. Using realistic parameters for a suspended nanowire in the form of a metallic carbon nanotube we analyze the evolution of the density matrix and demonstrate the possibility to cool the system down to a stationary vibron population of ∼0.1. Furthermore, it is shown that the stationary occupancy of the vibrational modes of the nanowire can be directly probed from the dc current responsible for carrying away the absorbed energy from the vibrating nanowire. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Quantum coherent effects in superconductors and normal metals Voltage-driven superconducting weak link as a refrigerator for cooling of nanomechanical vibrations Article published earlier |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| title |
Voltage-driven superconducting weak link as a refrigerator for cooling of nanomechanical vibrations |
| spellingShingle |
Voltage-driven superconducting weak link as a refrigerator for cooling of nanomechanical vibrations Sonne, G. Peña-Aza, M.E. Shekhter, R. I. Gorelik, L.Y. Jonson, M. Quantum coherent effects in superconductors and normal metals |
| title_short |
Voltage-driven superconducting weak link as a refrigerator for cooling of nanomechanical vibrations |
| title_full |
Voltage-driven superconducting weak link as a refrigerator for cooling of nanomechanical vibrations |
| title_fullStr |
Voltage-driven superconducting weak link as a refrigerator for cooling of nanomechanical vibrations |
| title_full_unstemmed |
Voltage-driven superconducting weak link as a refrigerator for cooling of nanomechanical vibrations |
| title_sort |
voltage-driven superconducting weak link as a refrigerator for cooling of nanomechanical vibrations |
| author |
Sonne, G. Peña-Aza, M.E. Shekhter, R. I. Gorelik, L.Y. Jonson, M. |
| author_facet |
Sonne, G. Peña-Aza, M.E. Shekhter, R. I. Gorelik, L.Y. Jonson, M. |
| topic |
Quantum coherent effects in superconductors and normal metals |
| topic_facet |
Quantum coherent effects in superconductors and normal metals |
| publishDate |
2010 |
| language |
English |
| container_title |
Физика низких температур |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| format |
Article |
| description |
We consider a new type of cooling mechanism for a suspended nanowire acting as a weak link between two superconductive electrodes. By applying a bias voltage over the system, we show that the system can be viewed as a refrigerator for the nanomechanical vibrations, where energy is continuously transferred from the vibrational degrees of freedom to the extended quasiparticle states in the leads through the periodic modulation of the inter-Andreev level separation. The necessary coupling between the electronic and mechanical degrees of freedom responsible for this energy-transfer can be achieved both with an external magnetic or electrical field, and is shown to lead to an effective cooling of the vibrating nanowire. Using realistic parameters for a suspended nanowire in the form of a metallic carbon nanotube we analyze the evolution of the density matrix and demonstrate the possibility to cool the system down to a stationary vibron population of ∼0.1. Furthermore, it is shown that the stationary occupancy of the vibrational modes of the nanowire can be directly probed from the dc current responsible for carrying away the absorbed energy from the vibrating nanowire.
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| issn |
0132-6414 |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/117514 |
| fulltext |
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| citation_txt |
Voltage-driven superconducting weak link as a refrigerator for cooling of nanomechanical vibrations / G. Sonne, M.E. Peña-Aza, R. I. Shekhter, L.Y. Gorelik, M. Jonson // Физика низких температур. — 2010. — Т. 36, № 10-11. — С. 1128–1137. — Бібліогр.: 23 назв. — англ. |
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| first_indexed |
2025-11-24T10:57:44Z |
| last_indexed |
2025-11-24T10:57:44Z |
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