Crossover of noise power from thermal to shot noise in superconducting mesoscopic devices
Low-frequency noise properties of all-thin-film superconducting Nb-(constrictions)-NbN point contacts have been investigated. This type of contact can be regarded as a superconducting mesoscopic system, and its quasiparticle characteristic can be analyzed effectively Blonder, Tinkham and Klapwijk (...
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| Veröffentlicht in: | Japanese Journal of Applied Physics 1996, Vol.35 (2B), p.1190-1193 |
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| container_end_page | 1193 |
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| container_issue | 2B |
| container_start_page | 1190 |
| container_title | Japanese Journal of Applied Physics |
| container_volume | 35 |
| creator | MISAKI, Y SAITO, A HAMASAKI, K |
| description | Low-frequency noise properties of all-thin-film superconducting Nb-(constrictions)-NbN point contacts have been investigated. This type of contact can be regarded as a superconducting mesoscopic system, and its quasiparticle characteristic can be analyzed effectively Blonder, Tinkham and Klapwijk ( BTK) theory based on the Bogoliubov-de Gennes equation. We also discuss on white noise in Nb-(constrictions)-NbN point contacts, in the clean and ballistic limit. The temperature dependence of crossover voltages between thermal noise and shot noise in the ballistic system is in good agreement with calculated values. |
| doi_str_mv | 10.1143/jjap.35.1190 |
| format | Article |
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This type of contact can be regarded as a superconducting mesoscopic system, and its quasiparticle characteristic can be analyzed effectively Blonder, Tinkham and Klapwijk ( BTK) theory based on the Bogoliubov-de Gennes equation. We also discuss on white noise in Nb-(constrictions)-NbN point contacts, in the clean and ballistic limit. 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This type of contact can be regarded as a superconducting mesoscopic system, and its quasiparticle characteristic can be analyzed effectively Blonder, Tinkham and Klapwijk ( BTK) theory based on the Bogoliubov-de Gennes equation. We also discuss on white noise in Nb-(constrictions)-NbN point contacts, in the clean and ballistic limit. The temperature dependence of crossover voltages between thermal noise and shot noise in the ballistic system is in good agreement with calculated values.</abstract><cop>Tokyo</cop><pub>Japanese journal of applied physics</pub><doi>10.1143/jjap.35.1190</doi><tpages>4</tpages></addata></record> |
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| identifier | ISSN: 0021-4922 |
| ispartof | Japanese Journal of Applied Physics, 1996, Vol.35 (2B), p.1190-1193 |
| issn | 0021-4922 1347-4065 |
| language | eng |
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| source | Institute of Physics Journals |
| subjects | Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Multilayers, superlattices , heterostructures Physics Properties of type I and type II superconductors Superconducting films and low-dimensional structures Superconductivity Transport properties (electric and thermal conductivity, thermoelectric effects, etc.) |
| title | Crossover of noise power from thermal to shot noise in superconducting mesoscopic devices |
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