Physics – Condensed Matter – Superconductivity
Scientific paper
2007-07-30
Physics
Condensed Matter
Superconductivity
accepted to PRB, low quality figures
Scientific paper
10.1103/PhysRevB.76.014531
Theory of self induced resonances in asymmetric two-junction interferometer device is presented. In real devices it is impossible to have an ideal interferometer free of imperfections. Thus, we extended previous theoretical approaches introducing a model which contains several asymmetries: Josephson current $\epsilon$, capacitances $\chi$ and dissipation $\rho$ presented in an equivalent circuit. Moreover, non conventional symmetry of the order parameter in high temperature superconducting quantum interference devices forced us to include phase asymmetries. Therefore, the model has been extended to the case of $\pi$-shift interferometers, where a phase shift is present in one of the junctions.
Polak T. P.
Sarnelli Ettore
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