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Flux and voltage periodic behaviour in a superconducting weak-link ring
journal contribution
posted on 2023-06-07, 19:44 authored by J F Ralph, T D Clark, J Diggins, Robert Prance, H Prance, A WidomStarting with a simple Lagrangian for the electromagnetic field with broken gauge symmetry, we derive an effective circuit Hamiltonian for a superconducting weak-link ring. The energy eigenstates of this Hamiltonian exhibit sensitivity to both external magnetic flux and an applied Faraday law voltage. We show that the flux periodicity of the rf SQUID ring, and the voltage periodic behaviour found in ultra-small-capacitance weak-link rings, can be seen as limiting cases of a more general phenomenon.
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Publication status
- Published
Journal
Journal of Physics: Condensed MatterISSN
0953-8984Publisher
Institute of PhysicsExternal DOI
Issue
39Volume
9Page range
8275-8285ISBN
0953-8984Department affiliated with
- Engineering and Design Publications
Full text available
- No
Peer reviewed?
- Yes
Legacy Posted Date
2012-02-06Usage metrics
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