Self-Induced Resonances in Asymmetric Superconducting Quantum Interference Devices

T.P. Polak Faculty of Physics, Adam Mickiewicz University of Poznań, Umultowska 85, 61-614 Poznań, Poland and E. Sarnelli Consiglio Nazionale delle Ricerche - Istituto Nazionale per la Fisica della Materia, Complesso Universitario Monte S. Angelo, 80126 Naples, Italy

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Received: 6 11 2007;

Theory of self-induced resonances in asymmetric two-junction interferometer device is presented. An extension of previous theoretical approaches contains inclusions from several asymmetries: the Josephson current ε, capacitances χ and dissipation ρ presented in an equivalent circuit. Our theory can be useful to determine asymmetry parameters always present in lightly damped asymmetric SQUIDs made from low- and high-TC materials.

DOI: 10.12693/APhysPolA.114.203 PACS numbers: 74.72.-h, 74.50.+r