Giant relaxation oscillations in a very strongly hysteretic SQUID ring-tank circuit system

Clark, T D, Prance, R J, Whiteman, R, Prance, H, Everitt, M J, Bulsara, A R and Ralph, J F (2001) Giant relaxation oscillations in a very strongly hysteretic SQUID ring-tank circuit system. Journal of Applied Physics, 90 (6). pp. 3042-3047. ISSN 0021-8979

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Abstract

In this article, we show that the radio frequency (rf) dynamical characteristics of a very strongly hysteretic superconducting quantum interference device (SQUID) ring, coupled to a rf tank circuit resonator, display relaxation oscillations. We demonstrate that the overall form of these characteristics, together with the relaxation oscillations, can be modeled accurately by solving the quasiclassical nonlinear equations of motion for the system. We suggest that in these very strongly hysteretic regimes, SQUID ring-resonator systems may find application in logic and memory devices. © 2001 American Institute of Physics.

Item Type: Article
Additional Information: Describes the first observation of a strongly non linear region of behaviour in a hysteretic SQUID ring, coupled to a radio frequency tank circuit resonator. Relaxation oscillations and phase portraits are shown and modelled accurately by solving the quasi-classical non linear equations of motion for the system. This is a combined experiment and theory paper. My contribution was to design the experiment and develop the techniques required to allow highly non linear behaviour to become observable in these systems. The work on SQUIDs contributed to a successful application for £200k SRIF funding of an ultra-low temperature facility at Sussex.
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Depositing User: Robert Prance
Date Deposited: 06 Feb 2012 20:35
Last Modified: 24 Jun 2015 12:21
URI: http://sro.sussex.ac.uk/id/eprint/26833
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