Critical-Current Reduction in Thin Superconducting Wires Due to Current Crowding

H. L. Hortensius; E. F. C. Driessen; T. M. Klapwijk; K. K. Berggren; J. R. Clem

doi:10.1063/1.4711217

Critical-Current Reduction in Thin Superconducting Wires Due to Current Crowding

Superconductivity 2012-05-08 v3

Authors: H. L. Hortensius , E. F. C. Driessen , T. M. Klapwijk , K. K. Berggren , J. R. Clem

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Abstract

We demonstrate experimentally that the critical current in superconducting NbTiN wires is dependent on their geometrical shape, due to current-crowding effects. Geometric patterns such as 90 degree corners and sudden expansions of wire width are shown to result in the reduction of critical currents. The results are relevant for single-photon detectors as well as parametric amplifiers.

Keywords

superconductivity

Cite

@article{arxiv.1203.4253,
  title  = {Critical-Current Reduction in Thin Superconducting Wires Due to Current Crowding},
  author = {H. L. Hortensius and E. F. C. Driessen and T. M. Klapwijk and K. K. Berggren and J. R. Clem},
  journal= {arXiv preprint arXiv:1203.4253},
  year   = {2012}
}

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