Proximity Induced Superconductivity in CdTe-HgTe Core-Shell Nanowires

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.

Accepted for publication in Nano Letters

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Cited by in corpus (3)

• Topological insulator nanoribbon Josephson junctions: evidence for size effect in transport properties
• Topological states in superlattices of HgTe-class materials for engineering three-dimensional flat bands
• Anomalous flux periodicity in proximitised quantum spin Hall constrictions