| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1546716 | Physica E: Low-dimensional Systems and Nanostructures | 2007 | 13 Pages |
Abstract
We review recent experimental progress on the saturation problem in metallic quantum wires. In particular, we address the influence of magnetic impurities on the electron phase coherence time. We also present new measurements of the phase coherence time in ultra-clean gold and silver wires and analyse the saturation of τφτφ in these samples, cognizant of the role of magnetic scattering. For the cleanest samples, Kondo temperatures below 1 mK and extremely small magnetic-impurity concentration levels of less than 0.08 ppm have to be assumed to attribute the observed saturation to the presence of magnetic impurities.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Laurent Saminadayar, Pritiraj Mohanty, Richard A. Webb, Pascal Degiovanni, Christopher Bäuerle,