Abstract
It is found that the lateral conductivity of a thin N layer inside a multi-terminal SINIS device (at temperatures down to 1.8 K) is dissipative with a small coherent contribution near zero voltage, which can be suppressed with a small parallel magnetic field; here S, I, and N denote a superconductor (Nb), an insulator (A10×), and a normal metal (A1) respectively. It is suggested that this contribution is due to the proximity effect through the tunnel barriers, involving the superconducting fluctuations in A1. At the same time, a high Josephson current can flow normal to the structure, which we propose is due to a direct Josephson coupling between the external S electrodes.
Original language | English (US) |
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Title of host publication | LOW TEMPERATURE PHYSICS |
Subtitle of host publication | 24th International Conference on Low Temperature Physics - LT24 |
Pages | 983-984 |
Number of pages | 2 |
Volume | 850 |
DOIs | |
State | Published - Dec 1 2006 |
Event | LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 - Orlando, FL, United States Duration: Aug 10 2006 → Oct 17 2006 |
Other
Other | LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 |
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Country | United States |
City | Orlando, FL |
Period | 8/10/06 → 10/17/06 |
Keywords
- Fluctuative superconductivity
- Josephson effect
- Multilayer
- Proximity effect
- Superconductivity
- Tunneling
ASJC Scopus subject areas
- Physics and Astronomy(all)