Conductance of a disordered double quantum wire in a magnetic field: boundary roughness scattering

摘要

We investigate the effect of the boundary roughness scattering on the conductance of a disordered tunnel-coupled double quantum wires in the presence of a perpendicular magnetic field. We show that the average distance between the neighboring discontinuities of the boundary profile plays an important role in the transport properties of the system and the manifestation of the localization-delocalization effect. We have found a new effect consisting of conductance decreasing with the increasing of the disorder correlation length.