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

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, both types of pinning arrays turned out to be inefficient for fluxes larger than Phi1. We demonstrate theoretically and experimentally the enhancement of Ic(Phi) for 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.

arXiv comment7 pages, 4 figures

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• Physical properties of weak-coupling quasiperiodic superconductors
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• Highly Effective Superconducting Vortex Pinning in Conformal Crystals
• Dynamics of self-organized driven particles with competing range interaction
• Pinning, Ordering, and Dynamics of Vortices in Conformal Crystal and Gradient Pinning Arrays
• Ultradense Tailored Vortex Pinning Arrays in Superconducting YBa${}_2$Cu${}_3$O${}_{7-\delta }$ Thin Films Created by Focused He Ion Beam Irradiation for Fluxonics Applications
• Enhancing superconducting critical current by randomness
• Angular magnetic-field dependence of vortex matching in pinning lattices fabricated by focused or masked helium ion beam irradiation of superconducting YBa${}_2$Cu${}_3$O${}_{7-\delta }$ thin films
• Supercurrent Distribution in Real-Space and Anomalous Paramagnetic Response in a Superconducting Quasicrystal
• Unconventional superfluidity of superconductivity on Penrose lattice
• The importance of thermal gradients on the vortex dynamics and magnetic behavior of mesoscopic superconducting samples
• Nanostructured Superconductors
• The phase boundary of superconducting niobium thin films with antidot arrays fabricated with microsphere photolithography
• Vortex Ordering and Dynamics on Santa Fe Artificial Ice Pinning Arrays
• Brillouin zone folding method for quasiperiodic superconductivity in multilayer systems: application to electronic structure and optical responses