Nonuniversal dynamic conductance fluctuations in disordered systems
arXiv:0901.3668 · doi:10.1103/PhysRevB.80.045118
Abstract
Sample-to-sample fluctuations of the time-dependent conductance of a system with static disorder have been studied by means of diagrammatic theory and microwave pulsed transmission measurements. The fluctuations of time-dependent conductance are not universal, i.e., depend on sample parameters, in contrast to the universal conductance fluctuations in the steady-state regime. The variance of normalized conductance, determined by the infinite-range intensity correlation C_3(t), is found to increase as a third power of delay time from an exciting pulse, t. C_3(t) grows larger than the long-range intensity correlation C_2(t) after a time t_q ~ <g>^{1/2} t_D (t_D being the diffusion time, <g> being the average dimensionless conductance).
Revised version, 6 pages, 5 figures
References in corpus (11)
- Multiple scattering of classical waves: from microscopy to mesoscopy and diffusion
- Statistics of energy levels and eigenfunctions in disordered systems
- Breakdown of Diffusion in Dynamics of Extended Waves in Mesoscopic Media
- Dynamics of weakly localized waves
- Relaxation process in a regime of quantum chaos
- Mesoscopic Correlation with Polarization of Electromagnetic Waves
- Dynamic Correlation in Wave Propagation in Random Media
- Impact of weak localization in the time domain
- Quantum relaxation in open chaotic systems
- "Optical conductance fluctuations: diagrammatic analysis in Landauer approach and non-universal effects"
- Enhanced mesoscopic correlations in dynamic speckle patterns