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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 Widom
Starting 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.

History

Publication status

  • Published

Journal

Journal of Physics: Condensed Matter

ISSN

0953-8984

Publisher

Institute of Physics

Issue

39

Volume

9

Page range

8275-8285

ISBN

0953-8984

Department affiliated with

  • Engineering and Design Publications

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2012-02-06

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