Electronic Transport in Double-Nanowire Superconducting Islands with Multiple Terminals.

Vekris, Alexandros; Estrada Saldaña, Juan Carlos; Kanne, Thomas; Hvid-Olsen, Thor; Marnauza, Mikelis; Olsteins, Dags; Wauters, Matteo M; Burrello, Michele et al. · Nano Lett · 2022

basic_science · Level V

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Abstract

We characterize in situ grown parallel nanowires bridged by a superconducting island. The magnetic-field and temperature dependence of Coulomb blockade peaks measured across different pairs of nanowire ends suggest the presence of a subgap state extended over the hybrid parallel-nanowire island. Being gate-tunable, accessible by multiple terminals, and free of quasiparticle poisoning, these nanowires show promise for the implementation of several proposals that rely on parallel nanowire platforms.

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