Multiple Andreev reflections revealed by the energy distribution of quasiparticles

Authors
Pierre, F Anthore, A Pothier, H Urbina, C Esteve, D
Citation
F. Pierre et al., Multiple Andreev reflections revealed by the energy distribution of quasiparticles, PHYS REV L, 86(6), 2001, pp. 1078-1081
Citations number
22
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
86
Issue
6
Year of publication
2001
Pages
1078 - 1081
Database
ISI
SICI code
0031-9007(20010205)86:6<1078:MARRBT>2.0.ZU;2-8
Abstract
We have performed the tunnel spectroscopy of the energy distribution functi on of quasiparticles in 5-mum-long silver wires connected to superconductin g reservoirs biased at different potentials. The distribution function f(E) presents several steps, which are manifestations of multiple Andreev refle ctions at the NS interfaces. The rounding of the steps is well explained by electron-electron interactions.