What happens in Josephson junctions at high critical current densities
Journal article, 2017
The impressive advances in material science and nanotechnology are more and more promoting the use of exotic barriers and/or superconductors, thus paving the way to new families of Josephson junctions. Semiconducting, ferromagnetic, topological insulator and graphene barriers are leading to unconventional and anomalous aspects of the Josephson coupling, which might be useful to respond to some issues on key problems of solid state physics. However, the complexity of the layout and of the competing physical processes occurring in the junctions is posing novel questions on the interpretation of their phenomenology. We classify some significant behaviors of hybrid and unconventional junctions in terms of their first imprinting, i.e., current-voltage curves, and propose a phenomenological approach to describe some features of junctions characterized by relatively high critical current densities J(c). Accurate arguments on the distribution of switching currents will provide quantitative criteria to understand physical processes occurring in high-J(c) junctions. These notions are universal and apply to all kinds of junctions.
Author
D. Massarotti
University of Naples Federico II
Superconductors, oxides and other innovative materials and devices
D. Stornaiuolo
Superconductors, oxides and other innovative materials and devices
University of Naples Federico II
P. Lucignano
Superconductors, oxides and other innovative materials and devices
University of Naples Federico II
R. Caruso
Superconductors, oxides and other innovative materials and devices
University of Naples Federico II
luca galletti
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Domenico Montemurro
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
B. Jouault
Laboratoire Charles Coulomb
G. Campagnano
Superconductors, oxides and other innovative materials and devices
University of Naples Federico II
H. F. Arani
Imam Khomeini International University
University of Naples Federico II
L. Longobardi
American Physical Society
L. Parlato
University of Naples Federico II
Superconductors, oxides and other innovative materials and devices
G. P. Pepe
Superconductors, oxides and other innovative materials and devices
University of Naples Federico II
G. Rotoli
University of Campania Luigi Vanvitelli
A. Tagliacozzo
Superconductors, oxides and other innovative materials and devices
University of Naples Federico II
Floriana Lombardi
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
F. Tafuri
University of Naples Federico II
Superconductors, oxides and other innovative materials and devices
Low Temperature Physics
1063-777X (ISSN)
Vol. 43 7 816-823Subject Categories
Condensed Matter Physics
DOI
10.1063/1.4995630