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Regular version of the site

Article

The Quantum Phase Slip Phenomenon in Superconducting Nanowires with High-Impedance Environment

Journal of Superconductivity and Novel Magnetism. 2016. Vol. 29. No. 3. P. 569-572.
Arutyunov K., Lehtinen J. S., Rantala T.

Quantum phase slip (QPS) is the particular manifestation
of quantum fluctuations of the order parameter
of a quasi-1D superconductor. The QPS event(s) can be
considered a dynamic equivalent of tunneling through conventional
Josephson junction containing static in space and
time weak link(s). At low temperaturesT << Tc, the QPS
effect leads to finite resistivity of narrow superconducting
channels and suppresses persistent currents in tiny nanorings.
Here, we demonstrate that the quantum tunneling of
phase may result in Coulomb blockade: superconducting
nanowire, imbedded in high-Ohmic environment, below a
certain bias voltage behaves as an insulator.