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arXiv · cond-mat/9703067

Spontaneous Flux and Magnetic Interference Patterns in 0-pi Josephson Junctions

J. R. Kirtley·K. A. Moler·D. J. Scalapino
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Abstract

The spontaneous flux generation and magnetic field modulation of the critical current in a 0-pi Josephson junction are calculated for different ratios of the junction length to the Josephson penetration depth, and different ratios of the 0-junction length to the pi-junction length. These calculations apply to a Pb-YBCO c-axis oriented junction with one YBCO twin boundary, as well as other experimental systems. Measurements of such a junction can provide information on the nature of the c-axis Josephson coupling and the symmetry of the order parameter in YBCO. We find spontaneous flux even for very short symmetric 0-pi junctions, but asymmetric junctions have qualitatively different behavior.

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J. R. Kirtley, K. A. Moler, D. J. Scalapino. 1997-03-06. Spontaneous Flux and Magnetic Interference Patterns in 0-pi Josephson Junctions. https://doi.org/10.1103/physrevb.56.886

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