Vortices in high-performance high-temperature superconductors

The behavior of vortex matter in high-temperature superconductors (HTS) controls the entire electromagnetic response of the material, including its current carrying capacity. Here, we review the basic concepts of vortex pinning and its application to a complex mixed pinning landscape to enhance the...

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Bibliographic Details
Published in:Reports on progress in physics 2016-11, Vol.79 (11), p.116501-116501
Main Authors: Kwok, Wai-Kwong, Welp, Ulrich, Glatz, Andreas, Koshelev, Alexei E, Kihlstrom, Karen J, Crabtree, George W
Format: Article
Language:English
Subjects:
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
critical current
superconducting wires
superconductivity
time-dependent Ginzburg-Landau
vortex matter
vortex pinning
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Summary:The behavior of vortex matter in high-temperature superconductors (HTS) controls the entire electromagnetic response of the material, including its current carrying capacity. Here, we review the basic concepts of vortex pinning and its application to a complex mixed pinning landscape to enhance the critical current and to reduce its anisotropy. We focus on recent scientific advances that have resulted in large enhancements of the in-field critical current in state-of-the-art second generation (2G) YBCO coated conductors and on the prospect of an isotropic, high-critical current superconductor in the iron-based superconductors. Lastly, we discuss an emerging new paradigm of critical current by design-a drive to achieve a quantitative correlation between the observed critical current density and mesoscale mixed pinning landscapes by using realistic input parameters in an innovative and powerful large-scale time dependent Ginzburg-Landau approach to simulating vortex dynamics.
ISSN:0034-4885
1361-6633
DOI:10.1088/0034-4885/79/11/116501