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arXiv · 1010.5015

Enhancing the critical current in quasiperiodic pinning arrays below and above the matching magnetic flux

V. R. Misko·D. Bothner·M. Kemmler·R. Kleiner·D. Koelle·F. M. Peeters·Franco Nori
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Abstract

Quasiperiodic pinning arrays, as recently demonstrated theoretically and experimentally using a five-fold Penrose tiling, can lead to a significant enhancement of the critical current Ic as compared to "traditional" regular pinning arrays. However, while regular arrays showed only a sharp peak in Ic(Phi) at the matching flux Phi1 and quasiperiodic arrays provided a much broader maximum at Phi Phi1 by using non-Penrose quasiperiodic pinning arrays. This result is based on a qualitatively different mechanism of flux pinning by quasiperiodic pinning arrays and could be potentially useful for applications in superconducting micro-electronic devices operating in a broad range of magnetic fields.

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V. R. Misko, D. Bothner, M. Kemmler, R. Kleiner, D. Koelle, F. M. Peeters, Franco Nori. 2010-10-24. Enhancing the critical current in quasiperiodic pinning arrays below and above the matching magnetic flux. https://doi.org/10.1103/physrevb.82.184512

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