Magnetic Field Induced Superconductivity in Out-of-Equilibrium Nanowires

Details Magnetic Field Induced Superconductivity in Out-of-Equilibrium Nanowires Magnetic Field Induced Superconductivity in Out-of-Equilibrium Nanowires

2009-01-22

arxiv.org/abs/0901.3519v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

Four-terminal resistance measurements have been carried out on Zn nanowires formed using electron-beam lithography. When driven resistive by current, these wires re-enter the superconducting state upon application of small magnetic fields. The data are qualitatively different from those of previous experiments on superconducting nanowires, which revealed either negative magnetoresistance near T_{c} or magnetic field enhanced critical currents. We suggest that our observations are associated with the damping of phase slip processes by the enhancement of dissipation by the quasiparticle conductance channel resulting from the application of a magnetic field.

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