Vanadium gate-controlled Josephson half-wave nanorectifier

Recently, the possibility to tune the critical current of conventional metallic superconductors via electrostatic gating was shown in wires, Josephson weak-links, and superconductor-normal metal–superconductor junctions. Here, we exploit such a technique to demonstrate a gate-controlled vanadium-bas...

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Bibliographic Details
Published in:Applied physics letters 2020-06, Vol.116 (25)
Main Authors: Puglia, C., De Simoni, G., Ligato, N., Giazotto, F.
Format: Article
Language:English
Subjects:
Applied physics
Circuits
Critical current (superconductivity)
Electric converters
Josephson junctions
Rectifiers
Superconductivity
Superconductor junctions
Superconductors
Vanadium
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Summary:Recently, the possibility to tune the critical current of conventional metallic superconductors via electrostatic gating was shown in wires, Josephson weak-links, and superconductor-normal metal–superconductor junctions. Here, we exploit such a technique to demonstrate a gate-controlled vanadium-based Dayem nano-bridge operated as a half-wave rectifier at 3 K. Our devices exploit the gate-driven modulation of the critical current of the Josephson junction and the resulting steep variation of its normal-state resistance, to convert an AC signal applied to the gate electrode into a DC one across the junction. All-metallic superconducting gated rectifiers could provide the enabling technology to realize tunable photon detectors and diodes useful for superconducting electronics circuitry.
ISSN:0003-6951
1077-3118
DOI:10.1063/5.0013512