Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2000-12-04
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
latex pothier.tex, 12 files, 15 pages in: Proceedings of the NATO Advanced Research Workshop on Size Dependent Magnetic Scatte
Scientific paper
We have measured in gold wires the energy exchange rate between quasiparticles, the phase coherence time of quasiparticles and the resistance vs. temperature, in order to probe the interaction processes which are relevant at low temperatures. We find that the energy exchange rate is higher than expected from the theory of electron-electron interactions, and that it has a different energy dependence. The dephasing time is constant at temperatures between 8 K and 0.5 K, and it increases below 0.5 K. The magnetoresistance is negative at large field scales, and the resistance decreases logarithmically with increasing temperatures, indicating the presence of magnetic impurities, probably Fe. Whereas resistivity and phase coherence measurements can be attributed to magnetic impurities, the question is raised whether these magnetic impurities could also mediate energy exchanges between quasiparticles.
Birge Norman O.
Devoret Michel H.
Esteve Daniel
Gougam A. B.
Pierre Frédéric
No associations
LandOfFree
Probing interactions in mesoscopic gold wires does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Probing interactions in mesoscopic gold wires, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Probing interactions in mesoscopic gold wires will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-69992