Quantum phase slips in a confined geometry

Abstract

We consider tunneling of vortices across a superconducting film that is both narrow and short (and connected to bulk superconducting leads at the ends). We find that in the superconducting state the resistance, at low values of the temperature (T) and current, does not follow the power-law dependence on T characteristic of longer samples but is exponential in 1/T. The coefficient of 1/T in the exponent depends on the length or, equivalently, the total normal-state resistance of the sample. These conclusions persist in the one-dimensional limit, which is similar to the problem of quantum phase slips in an ultra-narrow short wire.

14 pages, 1 figure; published in Phys. Rev. B

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Cited by in corpus (7)

• Probing individual topological tunnelling events of a quantum field via their macroscopic consequences
• Determination of the Superconductor-Insulator Phase Diagram for One-Dimensional Wires
• Quantitative analysis of quantum phase slips in superconducting MoGe nanowires revealed by switching-current statistics
• Current-phase Relationship, Thermal and Quantum Phase Slips in Superconducting Nanowires made on Scaffold Created using Adhesive Tape
• Superconductor Insulator Transition in Long MoGe Nanowires
• Quantum mechanics of superconducting nanowires
• Decay of near-critical currents in superconducting nanowires