Temperature Dependence of G⁻ Mode in Raman Spectra of Metallic Single-Walled Carbon Nanotubes

Figure 2

(a, b) Evolutions of RBM mode and G mode with increasing temperature. Spectra were acquired from two different spots on the substrate at temperatures listed above each spectrum. (c) Schematic illustration of the resonance conditions as a function of temperature-induced change of for two SWNTs shown in (a) and (b). denotes the excitation laser energy, and the orange zone marks the resonance window where RBMs of SWNTs can be observed.

(a)

(b)

(c)