Evolution from the vortex state to the critical state in a square-columnar Josephson-junction array
D.-X. Chen, J. J. Moreno, A. Hernando
DOI 10.1103/PhysRevB.53.6579 · Physical Review B
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Abstract
The remanence of a 25×25 square-columnar Josephson-junction array with normalized maximum junction current imax is calculated from the dc and ac Josephson equations, the Ampère theorem, and the gauge invariance. It is shown that with increasing imax the remanence changes from zero to nonzero. The field profile in the nonzero remanence state has multiple peaks at smaller imax but a single peak at greater imax, indicating a transition from the vortex state to the critical state. © 1996 The American Physical Society.
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