One-dimensional transport in hybrid metal-semiconductor nanotube systems

TL;DR

This paper presents a theory predicting Fano resonances in electron transport within a hybrid metal-semiconductor nanotube system, revealing a new coherent plasmon-mediated channel that enhances transparency and enables charge transfer control.

Contribution

It introduces a novel transport theory for a hybrid nanotube system, highlighting the role of plasmon interactions and Fano resonances in electron conduction.

Findings

Prediction of Fano resonances in the system

Identification of a new plasmon-mediated transport channel

Enhanced transparency in the hybrid system

Abstract

We develop an electron transport theory for the hybrid system of a semiconducting carbon nanotube that encapsulates a one-atom-thick metallic wire. The theory predicts Fano resonances in electron transport through the system, whereby the interaction of electrons on the wire with nanotube plasmon generated near-fields blocks some of the wire transmission channels to open up the new coherent plasmon-mediated channel in the nanotube forbidden gap outside the wire transmission band. Such a channel makes the entire hybrid system transparent in the energy domain where neither wire, nor nanotube is indivudually transparent. This effect can be used to manipulate by the electron charge transfer in hybrid nanodevices built on metal-semiconductor nanotube systems.