Normal metal tunnel junction-based superconducting quantum interference proximity transistor: the N-SQUIPT

Abstract

We report the fabrication and characterization of an alternative design for a superconducting quantum interference proximity transistor (SQUIPT) based on a normal metal (N) probe. The absence of direct Josephson coupling between the proximized metal nanowire and the N probe allows us to observe the full modulation of the wire density of states around zero voltage and current \textit{via} the application of an external magnetic field. This results into a drastic suppression of power dissipation which can be as low as a few $\sim 10^{-17}$ W. In this context the interferometer allows an improvement of up to four orders of magnitude with respect to earlier SQUIPT designs, and makes it ideal for extra-low power cryogenic applications. In addition, the N-SQUIPT has been recently predicted to be the enabling candidate for the implementation of coherent caloritronic devices based on proximity effect.

5 pages, 4 color figures

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Cited by in corpus (22)

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• Low-temperature characterization of Nb-Cu-Nb weak links with Ar ion-cleaned interfaces
• Phase-driven collapse of the Cooper condensate in a nanosized superconductor
• Josephson photodetectors via temperature-to-phase conversion
• Spectral characteristics of a fully-superconducting SQUIPT
• Electron cooling with graphene-insulator-superconductor tunnel junctions and applications to fast bolometry
• A Topological SQUIPT based on helical edge states in proximity to superconductors
• High operating temperature in V-based superconducting quantum interference proximity transistors
• Superconducting Quantum Interference Single-Electron Transistor
• ${\theta }_0$ thermal Josephson junction
• Phase-driven charge manipulation in Hybrid Single-Electron Transistor
• Thermodynamics of a phase-driven proximity Josephson junction
• Ultra linear magnetic flux-to-voltage conversion in superconducting quantum interference proximity transistors
• Magnetometry with low resistance proximity Josephson junction
• Inductive Superconducting Quantum Interference Proximity Transistor: the L-SQUIPT
• Phase relations in superconductor-normal metal-superconductor tunnel junctions
• Flux pumping of Cooper pairs through a Josephson Energy-Suppression Pump
• Single charge transport in a fully superconducting SQUISET locally tuned by self-inductance effects