Temperature Effects on the Raman Scattering of Single-Wall Carbon Nanotubes

Measurements on the temperature dependency were carried out for Raman spectra of the radial breathing mode (RBM) of single‐walled carbon nanotubes (SWCNT) in the range between 200 K and 700 K. The observed shifts in lines could be compensated by varying the energy of the exciting laser. The changes are assumed to originate from the temperature dependence of the carbon π‐overlap integral γ0 and the factor of proportionality between RBM frequency and inverse tube diameter C1. The results can be reproduced within a tight‐binding calculation and thus allow to determine the relevant temperature coefficients