Non-thermal origin of nonlinear transport across magnetically induced superconductor-metal-insulator transition
Y. Seo, Y. Qin, C. L. Vicente, K. S. Choi, Jongsoo Yoon
Abstract
We have studied the effect of perpendicular magnetic fields and temperatures on the nonlinear electronic transport in amorphous Ta superconducting thin films. The films exhibit a magnetic field induced metallic behavior intervening the superconductor-insulator transition in the zero temperature limit. We show that the nonlinear transport in the superconducting and metallic phase is of non-thermal origin and accompanies an extraordinarily long voltage response time.
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