Side-gate modulation of critical current in mesoscopic Josephson junction

Authors
Mortensen, NA Bastian, G
Citation
Na. Mortensen et G. Bastian, Side-gate modulation of critical current in mesoscopic Josephson junction, SUPERLATT M, 28(3), 2000, pp. 231-237
Citations number
22
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SUPERLATTICES AND MICROSTRUCTURES
ISSN journal
07496036 → ACNP
Volume
28
Issue
3
Year of publication
2000
Pages
231 - 237
Database
ISI
SICI code
0749-6036(200009)28:3<231:SMOCCI>2.0.ZU;2-Z
Abstract
We study the normal state conductance and the Josephson current in a superc onductor-2DEG-superconductor structure where the size/shape of the 2DEG-reg ion can be modified by an additional side-gate electrode. The considered tr ansport properties follow from the retarded Green function which we compute by employing a tight-binding-like representation of the Hamiltonian in the 2DEG region. Our model studies offer a qualitative demonstration of the re cently observed effects caused by side-gate modulation. (C) 2000 Academic P ress.