Unconventional Josephson Effect in Hybrid Superconductor-Topological Insulator Devices

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

来源：Physical Review Letters, 2012, 109(5): 056803.

DOI：10.1103/PhysRevLett.109.056803

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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.

• 出版日期2012-7-30