Flux and voltage periodic behaviour in a superconducting weak-link ring

Ralph, J F, Clark, T D, Diggins, J, Prance, R J, Prance, H and Widom, A (1997) Flux and voltage periodic behaviour in a superconducting weak-link ring. Journal of Physics: Condensed Matter, 9 (39). pp. 8275-8285. ISSN 0953-8984

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Abstract

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.

Item Type: Article
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Depositing User: Robert Prance
Date Deposited: 06 Feb 2012 18:22
Last Modified: 24 Jun 2015 12:25
URI: http://sro.sussex.ac.uk/id/eprint/15985
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