Superconducting Proximity Effect Probed on a Mesoscopic Length Scale
Authors:
- 30 September 1996
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 77 (14) , 3025-3028
Abstract
We have measured by tunneling spectroscopy the electronic density of states in a nonsuperconducting wire in good contact with a superconductor, at distances of 200, 300, and 800 nm from the interface. Closest to the interface, the density of states near the Fermi energy is reduced to 55% of its normal value. At the farthest measurement point, this dip has nearly completely disappeared. We compare our data to predictions based on the Usadel equations.Keywords
This publication has 18 references indexed in Scilit:
- Diffusive Conductors as Andreev InterferometersPhysical Review Letters, 1996
- Phase Controlled Conductance of Mesoscopic Structures with Superconducting “Mirrors”Physical Review Letters, 1995
- Circuit Theory of Andreev ConductancePhysical Review Letters, 1994
- Mesoscopic Transport in Tunable Andreev InterferometersPhysical Review Letters, 1994
- Observation of bound quasiparticle states in thin Au islands by scanning tunneling microscopyPhysical Review Letters, 1993
- Proximity-effect superconductive tunneling in Nb on InGaAs/InP/InGaAs heterostructuresPhysical Review Letters, 1990
- Transition from metallic to tunneling regimes in superconducting microconstrictions: Excess current, charge imbalance, and supercurrent conversionPhysical Review B, 1982
- Electron tunneling study of the superconducting proximity effect in Pb-CdPhysical Review B, 1977
- Investigations of the Proximity Effect by Electron TunnelingPhysical Review B, 1969
- Tunneling Model of the Superconducting Proximity EffectPhysical Review B, 1968