Crossover in mesoscopic conductance fluctuations in a quasi-one-dimensional system

摘要

We study the conductance fluctuations in the crossover between the ballistic and diffusive regimes of phase coherent transport. For a quasi-1D disordered system, the correlation function of the conductance at different frequencies is calculated beyond the diffusion approximation. The result obtained establishes the interrelation between conductance fluctuations in the crossover regime and the characteristics of the disordered system. The frequency dependence of different contributions to the correlation function is analyzed at subdiffusion length scales.