Nucleation-controlled vortex entry in a square-columnar Josephson-junction array
D.-X. Chen, J. J. Moreno, A. Hernando
DOI 10.1103/PhysRevB.56.2364 · Physical Review B
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Abstract
The initial magnetization curve of square-columnar Josephson-junction arrays is calculated from fundamental laws. It is found that the first vortex entry is controlled by vortex nucleation rather than surface depinning and it occurs at a field greater than that predicted by the traditional surface-barrier theory.
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