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Article

Voltage Noise in a Superconducting Wire with a Constriction

Journal of Superconductivity and Novel Magnetism. 2018. Vol. 31. No. 3. P. 711-714.
Semenov A. G., Zaikin A.

We analyze voltage fluctuations in superconducting nanowires with constrictions. We argue that quantum phase slips occurring in the constriction area are responsible for both equilibrium and non-equilibrium voltage noise in such systems. We evaluate the power spectrum of the voltage noise identifying its non-trivial dependence on both frequency and external bias.