Quantum transport through a conducting bridge: Correlation between surface disorder and bulk disorder

TL;DR

This paper investigates how surface disorder affects electron transport in finite conductors, revealing an unconventional increase in current with disorder strength in strong regimes, contrasting bulk disorder behavior, and examining size and magnetic field effects.

Contribution

It introduces a novel study of surface disorder effects on quantum transport, highlighting opposite behavior to bulk disorder and analyzing size and magnetic field influences.

Findings

Current increases with surface disorder in strong regimes

Transport properties are significantly affected by conductor size

Transverse magnetic field influences electron transport

Abstract

We explore a novel transport phenomenon by studying the effect of surface disorder on electron transport through a finite size conductor with side coupled metallic electrodes. In the strong disorder regime the current amplitude increases with the increase of the surface disorder strength, while, the amplitude decreases in the weak disorder regime. This behavior is completely opposite to that of bulk disordered system. In this article we also investigate the effects of the size of the conductor and the transverse magnetic field on electron transport and see that the transport properties are significantly influenced by them.