Distribution of conductance and its universal fluctuations in 1-D disordered, mesoscopic systems

Anupam Gupta , A. Jayannavar , A. Sen

The evolution with length of the probability distribution for the two-probe conductance (g2) of a disordered one-dimensional system is obtained numerically. It evolves from a strongly peaked distribution close to g2=1 in the small length limit towards another strongly peaked distribution near g2=0 in the large length limit. In the middle it goes through a quasi-diffusive regime where the distribution is nearly uniform. This is consistent with a universal conductance fluctuation of magnitude $\cong$0.3 e2/h (as observed in a recent paper) occurs in such a domain.

Domaines: Articles anciens

Anupam Gupta, A. Jayannavar, A. Sen. Distribution of conductance and its universal fluctuations in 1-D disordered, mesoscopic systems. Journal de Physique I, 1993, 3 (8), pp.1671-1675. ⟨10.1051/jp1:1993209⟩. ⟨jpa-00246825⟩