Tomonaga-Luttinger liquid theory for metallic fullurene polymers

TL;DR

This paper develops a Tomonaga-Luttinger liquid theory for metallic fullurene polymers, using multichannel bosonization based on first-principles calculations, explaining experimental data and predicting a crossover in electronic behavior.

Contribution

It introduces a closed-form expression for the local density of states power law anomalies in metallic C60 polymers, incorporating electronic correlations and nanoscale atomic corrugation effects.

Findings

Quantitative agreement with experimental local density of states data.

Prediction of a crossover at nearly 100 meV where the power law exponent changes.

Identification of the effects of electronic correlation and nanoscale structure on low-energy behavior.

Abstract

We investigate the low energy behavior of local density of states in metallic C$_{60}$ polymers theoretically. The multichannel bosonization method is applied to electronic band structures evaluated from first principles calculation, by which the effects of electronic correlation and nanoscale corrugation in the atomic configuration are fully taken into account. We obtain a closed-form expression for the power law anomalies in the local density of states, which successfully describes the experimental observation on the \fu polymers in a quantitative manner. An important implication from the closed-form solution is the existence of an experimentally unobserved crossover at nearly a hundred milli-electron volts, beyond which the power law exponent of the \fu polymers should change significantly.