Physics – Condensed Matter – Superconductivity
Scientific paper
2006-05-31
Physics
Condensed Matter
Superconductivity
5 pages, 4 figures
Scientific paper
10.1103/PhysRevLett.97.057005
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.
Choi Kang-Sin
Qin Yuhai
Seo Yunseok
Vicente Carlos L.
Yoon Jongsoo
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