Effects of magnetic field and disorder on electronic properties of Carbon Nanotubes

TL;DR

This study explores how magnetic fields and disorder influence the electronic properties of carbon nanotubes, revealing a magnetic-field-induced metal-insulator transition unaffected by disorder, with potential experimental validation.

Contribution

It demonstrates that magnetic fields can induce a metal-insulator transition in carbon nanotubes independently of disorder effects.

Findings

Magnetic field induces a metal-insulator transition in carbon nanotubes.

Disorder does not significantly affect the magnetic-field-induced transition.

Results suggest potential confirmation through tunneling experiments.

Abstract

Electronic properties of metallic and semiconducting carbon nanotubes are investigated in presence of magnetic field perpendicular to the CN-axis, and disorder introduced through energy site randomness. The magnetic field field is shown to induce a metal-insulator transition (MIT) in absence of disorder, and surprisingly disorder does not affect significantly the MIT. These results may find confirmation through tunneling experiments