1D-Disordered Conductor with Loops Immersed in a Magnetic Field

TL;DR

This paper studies how magnetic flux influences conductance in a disordered 1D loop system, revealing interference effects that can cause wave function delocalization, with potential implications for quantum transport.

Contribution

It demonstrates the emergence of Al'tshuler-Aronov-Spivak oscillations and shows that loop interference can induce wave function delocalization in disordered chains.

Findings

Observation of Al'tshuler-Aronov-Spivak oscillations

Interference effects lead to wave function delocalization

Conductance behavior influenced by magnetic flux

Abstract

We investigate the conductance of a 1-D disordered conducting loop with two contacts, immersed in a magnetic flux. We show the appearance in this model of the Al'tshuler-Aronov-Spivak behaviour. We also investigate the case of a chain of loops distributed with finite density: in this case we show that the interference effects due to the presence of the loops can lead to the delocalization of the wave function.