Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
2003-11-08
Physics
Condensed Matter
Disordered Systems and Neural Networks
4 pages, 5 figures
Scientific paper
10.1103/PhysRevLett.92.173902
We find a renormalized "time-dependent diffusion coefficient", D(t), for pulsed excitation of a nominally diffusive sample by solving the Bethe-Salpeter equation with recurrent scattering. We observe a crossover in dynamics in the transformation from a quasi-1D to a slab geometry implemented by varying the ratio of the radius, R, of the cylindrical sample with reflecting walls and the sample length, L. Immediately after the peak of the transmitted pulse, D(t) falls linearly with a nonuniversal slope that approaches an asymptotic value for R/L >> 1. The value of D(t) extrapolated to t = 0 depends only upon the dimensionless conductance, g, for R/L << l 1 and only upon kl for R/L >> 1, where k is the wave vector and l is the bare mean free path.
Chabanov Andrey
Cheung Sai-Kit
Genack Azriel Z.
Zhang Xinyu
Zhang Zhao-Qing
No associations
LandOfFree
Impact of weak localization in the time domain 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 Impact of weak localization in the time domain, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Impact of weak localization in the time domain will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-603537