Magnetoresistance Oscillations in Granular Superconducting Niobium Nitride Nanowires

Details Magnetoresistance Oscillations in Granular Superconducting Niobium Nitride Nanowires Magnetoresistance Oscillations in Granular Superconducting Niobium Nitride Nanowires

2009-07-14

arxiv.org/abs/0907.2468v1

Physical Review B 80, 012504 (2009)

Physics

Condensed Matter

Superconductivity

Published in Phys. Rev. B

Scientific paper

We report on magnetoresistance oscillations in superconducting NbNx nanowires synthesized through ammonia gas annealing of NbSe3 precursor nanostructures. Even though the transverse dimensions of the nanowires are much larger than the superconducting coherence length, the voltage-current characteristics of these nanowires at low temperatures are reminiscent of one-dimensional superconductors where quantum phase slips are associated with the origin of dissipation. We show that both the magnetoresistance oscillations and voltage-current characteristics observed in this work result from the granular structure of our nanowires.

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