Aharonov-Bohm Oscillation and Chirality Effect in Optical Activity of Single Wall Carbon Nanotubes

TL;DR

This paper investigates how magnetic flux and chirality influence the optical activity of single wall carbon nanotubes, providing theoretical insights and quantitative predictions to guide experimental studies.

Contribution

It introduces a symmetry-based framework and tight-binding calculations to analyze the Aharonov-Bohm effect on optical activity in SWCNs, highlighting the interplay between magnetic flux and chirality.

Findings

Optical activity depends on magnetic flux and chirality.

Derived a general symmetry-based expression for optical activity.

Provided quantitative predictions using tight-binding calculations.

Abstract

We study the Aharonov-Bohm effect in the optical phenomena of single wall carbon nanotubes (SWCN) and also their chirality dependence. Specially, we consider the natural optical activity as a proper observable and derive it's general expression based on a comprehensive symmetry analysis, which reveals the interplay between the enclosed magnetic flux and the tubule chirality for arbitrary chiral SWCN. A quantitative result for this optical property is given by a gauge invariant tight-binding approximation calculation to stimulate experimental measurements.