We propose the concept of a quantized single-electron source based on the interplay between Coulomb blockade and magnetic flux-controllable superconducting proximity effect. We show that flux dependence of the induced energy gap in the density of states of a nanosized metallic wire can be exploited as an efficient tunable energy barrier which enables charge-pumping configurations with enhanced functionalities. This control parameter strongly affects the charging landscape of a normal metal island with non-negligible Coulombic energy. Under a suitable evolution of a time-dependent magnetic flux the structure behaves like a turnstile for single electrons in a fully electrostatic regime.

Superconducting Quantum Interference Single-Electron Transistor / Enrico, Emanuele; Giazotto, Francesco. - In: PHYSICAL REVIEW APPLIED. - ISSN 2331-7019. - 5:6(2016). [10.1103/PhysRevApplied.5.064020]

Superconducting Quantum Interference Single-Electron Transistor

Enrico, Emanuele
;
2016

Abstract

We propose the concept of a quantized single-electron source based on the interplay between Coulomb blockade and magnetic flux-controllable superconducting proximity effect. We show that flux dependence of the induced energy gap in the density of states of a nanosized metallic wire can be exploited as an efficient tunable energy barrier which enables charge-pumping configurations with enhanced functionalities. This control parameter strongly affects the charging landscape of a normal metal island with non-negligible Coulombic energy. Under a suitable evolution of a time-dependent magnetic flux the structure behaves like a turnstile for single electrons in a fully electrostatic regime.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11696/57281
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