Gate control of superconducting current: Mechanisms, parameters, and technological potential
Review article, 2024
In conventional metal-oxide semiconductor (CMOS) electronics, the logic state of a device is set by a gate voltage (VG). The superconducting equivalent of such effect had remained unknown until it was recently shown that a VG can tune the superconducting current (supercurrent) flowing through a nanoconstriction in a superconductor. This gate-controlled supercurrent (GCS) can lead to superconducting logics like CMOS logics, but with lower energy dissipation. The physical mechanism underlying the GCS, however, remains under debate. In this review article, we illustrate the main mechanisms proposed for the GCS, and the material and device parameters that mostly affect it based on the evidence reported. We conclude that different mechanisms are at play in the different studies reported so far. We then outline studies that can help answer open questions on the effect and achieve control over it, which is key for applications. We finally give insights into the impact that the GCS can have toward high-performance computing with low-energy dissipation and quantum technologies.
Author
L. Ruf
University of Konstanz
C. Puglia
Scuola Normale Superiore di Pisa
T. Elalaily
Tanta University
Budapest University of Technology and Economics
G. De Simoni
Scuola Normale Superiore di Pisa
François Joint
Chalmers, Space, Earth and Environment, Onsala Space Observatory
M. Berke
Budapest University of Technology and Economics
J. Koch
University of Konstanz
A. Iorio
Scuola Normale Superiore di Pisa
S. Khorshidian
University of Konstanz
Péter Makk
Budapest University of Technology and Economics
Simone Gasparinetti
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Technology
Szabolcs Csonka
Budapest University of Technology and Economics
W. Belzig
University of Konstanz
M. Cuoco
University of Salerno
Francesco Giazotto
Scuola Normale Superiore di Pisa
E. Scheer
University of Konstanz
A. Di Bernardo
University of Salerno
University of Konstanz
Applied Physics Reviews
1931-9401 (eISSN)
Vol. 11 4 041314Gate Tuneable Superconducting Quantum Electronics (SuperGate)
European Commission (EC) (EC/H2020/964398), 2021-03-01 -- 2024-08-31.
Subject Categories
Condensed Matter Physics
DOI
10.1063/5.0222371