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Nonequilibrium effects in superconducting necks of nanoscopic dimensions

H. Suderow·S. Vieira
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Abstract

We have fabricated superconducting connecting necks of Pb with a scanning tunneling microscope (STM) and studied their properties under magnetic fields near the transition to the resistive state. A striking phenomenology is found with two well defined conduction regimes as a function of the magnetic field. We discuss the possible origin of this behavior in terms of the interplay between the field dependence of the quasiparticle charge imbalance length $Λ_{Q*}$ and the length of the neck which is superconducting under field.

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H. Suderow, S. Vieira. 2000-09-08. Nonequilibrium effects in superconducting necks of nanoscopic dimensions. https://doi.org/10.1016/s0375-9601(00)00587-9

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