Geometric dependence of Nb-Bi2Te3-Nb topological Josephson junction transport parameters

C.G. Molenaar, Denise Pèilíng Leusink, X.L. Wang, Alexander Brinkman

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Abstract

Part of Special issue on Topological Superconductors Superconductor-topological insulator–superconductor Josephson junctions have been fabricated in order to study the width dependence of the critical current, normal state resistance and flux periodicity of the critical current modulation in an external field. Previous literature reports suggest anomalous scaling in topological junctions due to the presence of Majorana bound states. However, for most realized devices, one would expect that trivial $2\pi $-periodic Andreev levels dominate transport. We also observe anomalous scaling behaviour of junction parameters, but the scaling can be well explained by mere geometric effects, such as the parallel bulk conductivity shunt and flux focusing.
Original languageUndefined
Article number104003
Pages (from-to)-
Number of pages6
JournalSuperconductor science and technology
Volume27
Issue number10
DOIs
Publication statusPublished - 2014

Keywords

  • IR-94526
  • METIS-309410

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