Pinch resonances in a radio-frequency-driven superconducting-quantum-interference-device ring-resonator system
H. Prance, T. D. Clark, R. Whiteman, R. J. Prance, M. Everitt, P. Stiffell, J. F. Ralph
DOI 10.1103/PhysRevE.64.016208 · Physical Review E
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Abstract
In this paper we present experimental data on the frequency domain response of a superconducting-quantum-interference-device ring (a Josephson weak link enclosed by a thick superconducting ring) coupled to a radio frequency tank circuit resonator. We show that with the ring weakly hysteretic the resonance line shape of this coupled system can display opposed fold bifurcations that appear to touch (pinch off). We demonstrate that for appropriate circuit parameters these pinchoff line shapes exist as solutions of the nonlinear equations of motion for the system.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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