Simulation of the vortex dynamics in a real pinning landscape of YBa${}_2$Cu${}_3$O${}_{7-\delta }$ coated conductors

Abstract

The ability of high-temperature superconductors (HTSs) to carry very large currents with almost no dissipation makes them irreplaceable for high-power applications. The development and further improvement of HTS-based cables requires an in-depth understanding of the superconducting vortex dynamics in presence of complex pinning landscapes. We present a critical current analysis of a real HTS sample in a magnetic field by combining state-of-the-art large-scale Ginzburg-Landau simulations with reconstructive three-dimensional scanning transmission electron microscopy tomography of the pinning landscape in Dy-doped YBa${}_2$Cu${}_3$O${}_{7-\delta }$. This methodology provides a unique look at the vortex dynamics in the presence of a complex pinning landscape, responsible for the high current-carrying capacity characteristic of commercial HTS wires. Our method demonstrates very good functional and quantitative agreement of the critical current between simulation and experiment, providing a new predictive tool for HTS wires design.

7 pages, 3 figures

References in corpus (3)

• Rapid Doubling of the Critical Current of YBa${}_2$Cu${}_3$O${}_{7-\delta }$ Coated Conductors for Viable High-Speed Industrial Processing
• Stable large-scale solver for Ginzburg-Landau equations for superconductors
• Depinning and creep motion in glass states of flux lines

Cited by in corpus (14)

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• Strong-pinning regimes by spherical inclusions in anisotropic type-II superconductors
• Effect of hexagonal patterned arrays and defect geometry on the critical current of superconducting films
• Decoupling and tuning competing effects of different types of defects on flux creep in irradiated YBa${}_2$Cu${}_3$O${}_{7-\delta }$ coated conductors
• Targeted evolution of pinning landscapes for large superconducting critical currents
• The quest for high critical current in applied high-temperature superconductors
• Peak effect due to competing vortex ground states in superconductors with large inclusions
• Edge effect pinning in mesoscopic superconducting strips with non-uniform distribution of defects
• In silico optimization of critical currents in superconductors
• Dynamical regimes of vortex flow in type-II superconductors with parallel twin boundaries
• A Time-Dependent Ginzburg-Landau Framework for Sample-Specific Simulation of Superconductors for SRF Applications