Optical Absorption in C_70 and C_76: Effects of Symmetry Reduction

TL;DR

This paper calculates optical absorption spectra of C_70 and C_76 molecules using a tight binding model with Coulomb interactions, analyzing how symmetry reduction affects spectral features, with results aligning well with experimental data for C_70.

Contribution

It introduces a detailed theoretical analysis of optical spectra considering symmetry reduction effects in fullerenes C_70 and C_76.

Findings

C_70 spectrum agrees with experimental data

Symmetry reduction from C_70 to C_76 influences spectral shape

The model effectively captures spectral variations due to symmetry changes

Abstract

Optical absorption spectra of C_70 and C_76 are calculated by a tight binding model with a long ranged Coulomb interaction. The spectrum of C_70 is in overall agreement with the experiment of molecules in a solution. The variations of the spectral shape are discussed relating with the symmetry reduction from C_70 to C_76.