Electric field induced localization phenomena in a ladder network with superlattice configuration: Effect of backbone environment

TL;DR

This paper investigates how electric fields induce localization in a ladder network with backbone sites, revealing multiple mobility edges that enable switching between conductive and insulating states, useful for nanoscale device applications.

Contribution

It introduces a novel analysis of electric field effects on localization in ladder networks with backbone sites, highlighting the potential for controllable switching behavior.

Findings

Multiple mobility edges observed, enabling switching between conducting and insulating states.

Electric field influences localization properties, allowing control over transport characteristics.

Potential applications in mesoscopic and DNA-based switching devices.

Abstract

Electric field induced localization properties of a tight-binding ladder network in presence of backbone sites are investigated. Based on Green's function formalism we numerically calculate two-terminal transport together with density of states for different arrangements of atomic sites in the ladder and its backbone. Our results lead to a possibility of getting multiple mobility edges which essentially plays a switching action between a completely opaque to fully or partly conducting region upon the variation of system Fermi energy, and thus, support in fabricating mesoscopic or DNA-based switching devices.