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Nonlocality in mesoscopic Josephson junctions with strip geometry

Urs Ledermann·Alban L. Fauchere·Gianni Blatter
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Abstract

We study the current in a clean superconductor-normal-metal-superconductor junction of length d and width w in the presence of an applied magnetic field H. We show that both the geometrical pattern of the current density and the critical current as a function of the total flux in the junction, depend on the ratio of the Josephson vortex distance a_0 and the range r of the nonlocal electrodynamics. In particular, the critical current has the periodicity of the superconducting flux quantum only for r a_0. Comparing our results to recent experiments of Heida et al. [Phys. Rev. B 57, R5618 (1998)] we find good agreement.

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Urs Ledermann, Alban L. Fauchere, Gianni Blatter. 1999-02-10. Nonlocality in mesoscopic Josephson junctions with strip geometry. https://doi.org/10.1103/physrevb.59.r9027

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