Superconducting Vortices induced Periodic Magnetoresistance Oscillations in Single Crystal Au Nanowires

Details Superconducting Vortices induced Periodic Magnetoresistance Oscillations in Single Crystal Au Nanowires Superconducting Vortices induced Periodic Magnetoresistance Oscillations in Single Crystal Au Nanowires

2011-03-11

arxiv.org/abs/1103.2173v2

Physics

Condensed Matter

Superconductivity

Scientific paper

We show in this paper that it is possible to induce superconducting vortices in a gold nanowire connected to superconducting electrodes. The gold nanowire acquires superconductivity by the proximity effect. The differential magnetoresistance of the nanowire beyond a critical magnetic field shows uniform oscillations with increasing field with a period of \phi0/(2\pir^2) (\phi0 = h/2e is the superconducting flux quantum, r = 35 nm is the radius of the nanowire). We demonstrate that these periodic oscillations are the signatures of the sequential generation and moving of vortices across the gold nanowire.

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