Unconventional Josephson Effect in Hybrid Superconductor-Topological Insulator Devices

J. R. Williams; A. J. Bestwick; P. Gallagher; Seung Sae Hong; Y. Cui; Andrew S. Bleich; J. G. Analytis; I. R. Fisher; D. Goldhaber-Gordon

doi:10.1103/PhysRevLett.109.056803

Unconventional Josephson Effect in Hybrid Superconductor-Topological Insulator Devices

Mesoscale and Nanoscale Physics 2015-06-04 v3 Superconductivity

Authors: J. R. Williams , A. J. Bestwick , P. Gallagher , Seung Sae Hong , Y. Cui , Andrew S. Bleich , J. G. Analytis , I. R. Fisher , D. Goldhaber-Gordon

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Abstract

We report on transport properties of Josephson junctions in hybrid superconducting-topological insulator devices, which show two striking departures from the common Josephson junction behavior: a characteristic energy that scales inversely with the width of the junction, and a low characteristic magnetic field for suppressing supercurrent. To explain these effects, we propose a phenomenological model which expands on the existing theory for topological insulator Josephson junctions.

Keywords

Josephson effect topological insulator superconductor hybrid devices transport properties supercurrent phenomenological model

Cite

@article{arxiv.1202.2323,
  title  = {Unconventional Josephson Effect in Hybrid Superconductor-Topological Insulator Devices},
  author = {J. R. Williams and A. J. Bestwick and P. Gallagher and Seung Sae Hong and Y. Cui and Andrew S. Bleich and J. G. Analytis and I. R. Fisher and D. Goldhaber-Gordon},
  journal= {arXiv preprint arXiv:1202.2323},
  year   = {2015}
}

Unconventional Josephson Effect in Hybrid Superconductor-Topological Insulator Devices

Abstract

Keywords

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