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arXiv · 1905.09593

Proximity Induced Superconductivity in CdTe-HgTe Core-Shell Nanowires

Jan Hajer·Maximilian Kessel·Christoph Brüne·Martin P. Stehno·Hartmut Buhmann·Laurens W. Molenkamp
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Abstract

In this letter we report on proximity superconductivity induced in CdTe-HgTe core-shell nanowires, a quasi-one-dimensional heterostructure of the topological insulator HgTe. We demonstrate a Josephson supercurrent in our nanowires contacted with superconducting Al leads. The observation of a sizable $I_c R_n$ product, a positive excess current and multiple Andreev reflections up to fourth order further indicate a high interface quality of the junctions.

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Jan Hajer, Maximilian Kessel, Christoph Brüne, Martin P. Stehno, Hartmut Buhmann, Laurens W. Molenkamp. 2019-05-23. Proximity Induced Superconductivity in CdTe-HgTe Core-Shell Nanowires. https://doi.org/10.1021/acs.nanolett.9b01472

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