arxiv: 1202.2323 · v3 · pith:IKV36SHCnew · submitted 2012-02-10 · ❄️ cond-mat.mes-hall · cond-mat.supr-con

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

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D. Goldhaber-Gordon

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classification ❄️ cond-mat.mes-hall cond-mat.supr-con

keywords josephsoninsulatorcharacteristicdeviceshybridjunctionjunctionsbehavior

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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.

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Unconventional Josephson Effect in Hybrid Superconductor-Topological Insulator Devices

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