Buffer-layer roughness in MgB2 films produces stronger pinning, higher breakdown currents, and normal-domain-driven resistive transitions compared to columnar defects, as shown by I-V measurements and TDGL simulations.
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cond-mat.supr-con 2years
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Annealed NbRe films form grain-boundary vortex channels and show voltage kinks from normal-domain nucleation, unlike as-grown films that exhibit flux-flow breakdown.
citing papers explorer
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Crystal structure effects on vortex dynamics in superconducting MgB$_2$ thin films
Buffer-layer roughness in MgB2 films produces stronger pinning, higher breakdown currents, and normal-domain-driven resistive transitions compared to columnar defects, as shown by I-V measurements and TDGL simulations.
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Annealing-induced grain coarsening and voltage kinks in superconducting NbRe films
Annealed NbRe films form grain-boundary vortex channels and show voltage kinks from normal-domain nucleation, unlike as-grown films that exhibit flux-flow breakdown.