Little-Parks effect in a superconducting loop with magnetic dot

Abstract

We have studied the nucleation of superconductivity in a mesoscopic Al loop, enclosing magnetic dot with perpendicular magnetization. The superconducting phase boundary Tc(B), determined from transport measurements, is asymmetric with respect to the polarity of an applied magnetic field. The maximum critical temperature has been found for a finite applied magnetic field, which is antiparallel to the magnetization of the dot. Theoretical phase boundary shows a good agreement with the experimental data.

to be published in Phys. Rev. B - Brief Reports

References in corpus (2)

• Nanoengineered magnetic-field-induced superconductivity
• Nucleation of superconductivity in Al mesoscopic disk with magnetic dot

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• Flux-periodic oscillations in proximitized core-shell nanowires
• Anisotropy and effective dimensionality crossover of the fluctuation conductivity of hybrid superconductor/ferromagnet structures