Resonant magneto-conductance through a vibrating nanotube

TL;DR

This paper investigates how a transverse magnetic field affects electron transport through a vibrating carbon nanotube, revealing negative magneto-conductance and phonon-assisted transport phenomena.

Contribution

It introduces a model for resonant electron transport in a vibrating nanotube under magnetic fields, highlighting magnetic-field-induced effects on conductance.

Findings

Negative magneto-conductance observed

Magnetic-field narrows resonance line

Conductance peak reduces with asymmetric contacts

Abstract

We address the electronic resonant transport in presence of a transverse magnetic field through the single level of a suspended carbon nanotube acting as a quantum oscillator. We predict a negative magneto-conductance with a magnetic-field induced narrowing of the resonance line and a reduction of the conductance peak when the nanotube is asymmetrically contacted to the leads. At finite bias voltage we study the threshold for phonon-assisted transport.