Josephson current in a finite-size junction interrupting a superconducting ring
R. De Luca, T. Di Matteo, A. Tuohimaa, J. Paasi
DOI 10.1103/PhysRevB.59.9564 · Physical Review B
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Abstract
We study the behavior of the Josephson current IJ flowing in a finite-size Josephson junction in a superconducting ring in the presence of an externally applied magnetic field H, taking into account the effect of the shielding currents. The set of self-consistent equations for the system can be solved explicitly for IJ in the small self-inductance coefficient limit for not negligible effective junction areas. It is found that the resulting IJ versus H curve presents a Fraunhofer-like prefactor modulating a periodic quasisinusoidal odd function.
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