Crossover from Josephson to Multiple Andreev Reflection Currents in Atomic Contacts
M. Chauvin, P. vom Stein, D. Esteve, C. Urbina, J. C. Cuevas, A. Levy Yeyati
DOI 10.1103/PhysRevLett.99.067008 · Physical Review Letters
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
The basic current-carrying mechanism through a superconducting weak link embedded in a resistive environment undergoes a continuous crossover, as the voltage increases, from Josephson Cooper pair transfer exciting electromagnetic modes in the environment to multiple Andreev reflections leading to the creation of quasiparticles. We corroborate these ideas through measurements of the dc current-voltage characteristics of superconducting atomic contacts containing channels of arbitrary and adjustable transmission. We present a simple model, in the spirit of the classical resistively shunted junction model, that accounts well for the observed characteristics.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Al Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure unresolved | unknown |
Similar papers
Supercurrent in Atomic Point Contacts and Andreev States
similarity 0.95M. F. Goffman et al.
Source status unknown — claims are unverified
Andreev processes in mesoscopic multiterminal graphene Josephson junctions
similarity 0.95Fan Zhang et al.
Source status unknown — claims are unverified
Charge transport through ultrasmall single and double Josephson junctions coupled to resonant modes of the electromagnetic environment
similarity 0.94Yu. A. Pashkin et al.
Source status unknown — claims are unverified
Phase-Charge Duality of a Josephson Junction in a Fluctuating Electromagnetic Environment
similarity 0.94S. Corlevi et al.
Source status unknown — claims are unverified
Current Mirror Effect and Correlated Cooper-Pair Transport in Coupled Arrays of Small Josephson Junctions
similarity 0.94H. Shimada & P. Delsing
Source status unknown — claims are unverified
Controllable Andreev Bound States in Bilayer Graphene Josephson Junctions from Short to Long Junction Limits
similarity 0.94Geon-Hyoung Park et al.
Source status unknown — claims are unverified