Scaling of the low temperature dephasing rate in Kondo systems

Details Scaling of the low temperature dephasing rate in Kondo systems Scaling of the low temperature dephasing rate in Kondo systems

2006-07-06

arxiv.org/abs/cond-mat/0607154v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures, submitted to Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.97.226804

We present phase coherence time measurements in quasi-one-dimensional Ag wires doped with Fe Kondo impurities of different concentrations $n_s$. Due to the relatively high Kondo temperature $T_{K}\approx 4.3K$ of this system, we are able to explore a temperature range from above $T_{K}$ down to below $0.01 T_{K}$. We show that the magnetic contribution to the dephasing rate $\gamma_m$ per impurity is described by a single, universal curve when plotted as a function of $(T/T_K)$. For $T>0.1 T_K$, the dephasing rate is remarkably well described by recent numerical results for spin $S=1/2$ impurities. At lower temperature, we observe deviations from this theory. Based on a comparison with theoretical calculations for $S>1/2$, we discuss possible explanations for the observed deviations.

Affiliated with

Also associated with

No associations

Rating

Scaling of the low temperature dephasing rate in Kondo systems 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 Scaling of the low temperature dephasing rate in Kondo systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Scaling of the low temperature dephasing rate in Kondo systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-45277