Decay of the supercurrent in tunnel junctions
- 1 December 1983
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 28 (11), 6281-6285
- https://doi.org/10.1103/physrevb.28.6281
Abstract
The current state in a Josephson junction is metastable. Thermal and quantum fluctuations destroy such a state and make its lifetime finite. By lowering the temperature the role of quantum fluctuations increases. If there is a gap in the excitation spectrum, then for quantum tunneling high-frequency processes (pair decay) are essential. Quantum tunneling is connected with a change of a large amount of electron states.Keywords
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