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London equation studies of thin-film superconductors with a triangular antidot lattice

Sa-Lin Cheng·D. J. Priour Jr·H. A. Fertig
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Abstract

We report on a study of vortex pinning in nanoscale antidot defect arrays in the context of the London Theory. Using a wire network model, we discretize the array with a fine mesh, thereby providing a detailed treatment of pinning phenomena. The use of a fine grid has enabled us to examine both circular and elongated defects, patterned in the form of a rhombus. The latter display pinning characteristics superior to circular defects constructed with the similar area. We calculate pinning potentials for defects containing zero and single quanta, and we obtain a pinning phase diagram for the second matching field, $H = 2 Φ_{o}$.

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Sa-Lin Cheng, D. J. Priour Jr, H. A. Fertig. 2001-05-31. London equation studies of thin-film superconductors with a triangular antidot lattice. https://doi.org/10.1103/physrevb.65.024503

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