$h/e$ superconducting quantum interference through trivial edge states in InAs

Abstract

Josephson junctions defined in strong spin orbit semiconductors are highly interesting for the search for topological systems. However, next to topological edge states that emerge in a sufficient magnetic field, trivial edge states can also occur. We study the trivial edge states with superconducting quantum interference measurements on non-topological InAs Josephson junctions. We observe a SQUID pattern, an indication of superconducting edge transport. Also, a remarkable $h/e$ SQUID signal is observed that, as we find, stems from crossed Andreev states.

References in corpus (6)

• Quantum Spin Hall Insulator State in HgTe Quantum Wells
• Edge-mode Superconductivity in a Two Dimensional Topological Insulator
• Anomalous Fraunhofer Interference in Epitaxial Superconductor-Semiconductor Josephson Junctions
• Spin-triplet supercurrent carried by quantum Hall edge states through a Josephson junction
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Cited by in corpus (5)

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• Counterflowing edge current and its equilibration in quantum Hall devices with sharp edge potential: Roles of incompressible strips and contact configuration
• Majorana fermions on the quantum Hall edge
• Gate-tunable Electronic Transport in p-type GaSb Quantum Wells
• Majorana bound states in topological insulators with hidden Dirac points