Magnetoresistance Oscillations in Granular Superconducting Niobium Nitride Nanowires

U. Patel; Z. L. Xiao; A. Gurevich; S. Avci; J. Hua; R. Divan; U. Welp; W. K. Kwok

Magnetoresistance Oscillations in Granular Superconducting Niobium Nitride Nanowires

Superconductivity 2009-07-16 v1

Authors: U. Patel , Z. L. Xiao , A. Gurevich , S. Avci , J. Hua , R. Divan , U. Welp , W. K. Kwok

Abstract

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.

Keywords

magnetoresistance oscillations superconducting nanowires niobium nitride granular superconductivity quantum phase slips

Cite

@article{arxiv.0907.2468,
  title  = {Magnetoresistance Oscillations in Granular Superconducting Niobium Nitride Nanowires},
  author = {U. Patel and Z. L. Xiao and A. Gurevich and S. Avci and J. Hua and R. Divan and U. Welp and W. K. Kwok},
  journal= {arXiv preprint arXiv:0907.2468},
  year   = {2009}
}

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Published in Phys. Rev. B

Magnetoresistance Oscillations in Granular Superconducting Niobium Nitride Nanowires

Abstract

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