Superconducting Properties of Functional Materials
Summary
Superconducting functional materials exhibit zero electrical resistance and perfect diamagnetism below a characteristic critical temperature (Tc). The phenomenon arises from the formation of Cooper pairs and the establishment of a macroscopic quantum state. Key classes include high-Tc cuprates, iron-based pnictides and chalcogenides, and more recently engineered heterostructures and composite meta-superconductors. Tailoring grain boundaries, chemical doping and nanoscale inclusions has proved essential to enhance the critical current density (Jc) and flux-pinning capabilities, which in turn govern practical performance. Recent advances in epitaxial thin films, nanowire networks and hybrid composites have revealed the critical role of microstructure and interfacial phenomena in stabilising superconductivity at elevated temperatures. The global impact of these developments spans lossless power transmission, high-field magnets, magnetic resonance imaging and emerging quantum technologies. Interdisciplinary efforts continue to refine processing routes and fundamental models, with particular attention to the interplay between lattice distortions, carrier density and vortex dynamics.
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Superconducting Properties of Functional Materials publication trend
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Technical terms
Critical temperature (Tc): The temperature below which a material exhibits zero electrical resistance and expels magnetic flux.
Critical current density (Jc): The maximum current per unit area a superconductor can carry without losing its zero-resistance state.
Meissner effect: The complete expulsion of magnetic field lines from the interior of a superconducting material below Tc.
Flux pinning: The immobilisation of magnetic vortices within defects or inclusions in a superconductor, essential to maintain high Jc under applied fields.
References
- Green-Light GaN p-n Junction Luminescent Particles Enhance the Superconducting Properties of B(P)SCCO Smart Meta-Superconductors (SMSCs). Nanomaterials (2023).
- Microstructure and Fluctuation-Induced Conductivity Analysis of Bi2Sr2CaCu2O8+δ (Bi-2212) Nanowire Fabrics. Crystals (2020).
- Magnetoresistivity studies for BiPb-2223 phase added by BaSnO3 nanoparticles. Journal of Advanced Ceramics (2017).
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