Whiteman, R, Diggins, J, Schollmann, V, Clark, T D, Prance, R J, Prance, H and Ralph, J F (1997) Opposed (hammerhead) Bifurcations in the Resonant Lineshape of a Strongly Driven SQUID Ring - Tank Circuit System. Physics Letters A, 234 (3). pp. 205-212. ISSN 03759601

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Abstract

In this paper we describe very unusual paired bifurcations which can appear in the resonance curve of a coupled SQUID ring-radio frequency (rf) tank circuit system when the rf flux at the ring is comparable to Fo (= h/2e). We demonstrate that the position of these bistabilities is controlled by the static magnetic flux Fxstat applied to the ring, with simple bistable regions being observed on the lower or upper side of the resonance when (for n integer) Fxstat is close to nFo or (n + 1/2) Fo, respectively. More interestingly, we show that for values of Fx close to (n ± 1/4) Fo this resonance exhibits bistability on both its lower and upper sides. We discuss this very unusual phenomenon in terms of the non-linear equation of motion for the coupled system.

Item Type:	Article
Schools and Departments:	School of Engineering and Informatics > Engineering and Design
Depositing User:	Robert Prance
Date Deposited:	06 Feb 2012 20:20
Last Modified:	24 Jun 2015 12:25
URI:	http://sro.sussex.ac.uk/id/eprint/25493

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