Experimental critical current patterns in Josephson junction ladders

P. Binder; P. Caputo; M. V. Fistul; A. V. Ustinov; G. Filatrella

doi:10.1103/PhysRevB.62.8679

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Experimental critical current patterns in Josephson junction ladders

P. Binder, P. Caputo, M. V. Fistul, A. V. Ustinov, G. Filatrella

DOI 10.1103/PhysRevB.62.8679 · Physical Review B

T1

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Abstract

We present an experimental and theoretical study of the magnetic-field dependence of the critical current of Josephson junction ladders. At variance with the well-known case of a one-dimensional (1D) parallel array of Josephson junctions the magnetic-field patterns display a single minimum even for very low values of the self-inductance parameter βL. Experiments performed changing both the geometrical value of the inductance and the critical current of the junctions show a good agreement with numerical simulations. We argue that the observed magnetic-field patterns are due to a peculiar mapping between the isotropic Josephson ladder and the 1D parallel array with the self-inductance parameter βLeff=βL+2.

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Formula	Reported Tc (K)	Pressure (GPa)	Type
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