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- Title
Shot Noise in Ultrathin Superconducting Wires.
- Authors
Semenov, Andrew; Zaikin, Andrei
- Abstract
Quantum phase slips (QPS) may produce non-equilibrium voltage fluctuations in current-biased superconducting nanowires. Making use of the Keldysh technique and employing the phase-charge duality arguments we investigate such fluctuations within the four-point measurement scheme and demonstrate that shot noise of the voltage detected in such nanowires may essentially depend on the particular measurement setup. In long wires, the shot noise power decreases with increasing frequency Ω and vanishes beyond a threshold value of Ω at T→0.
- Subjects
SUPERCONDUCTORS; FRANZ-Keldysh effect; QUANTUM noise; NANOWIRES; FIELD theory (Physics)
- Publication
Journal of Superconductivity & Novel Magnetism, 2017, Vol 30, Issue 1, p139
- ISSN
1557-1939
- Publication type
Article
- DOI
10.1007/s10948-016-3783-9