Unconventional Josephson Effect in Hybrid Superconductor-Topological   Insulator Devices
  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. 
J. R. Williams, A. J. Bestwick, P. Gallagher, Seung Sae Hong, Y. Cui,   Andrew S. Bleich, J. G. Analytis, I. R. Fisher, D. G...
cond-mat.mes-hall cond-mat.supr-con