Observation of Layer-Breathing Mode Vibrations in Few-Layer Graphene through Combination Raman Scattering
Observation of Layer-Breathing Mode Vibrations in Few-Layer Graphene through Combination Raman Scattering
We report the observation of layer-breathing mode (LBM) vibrations in few-layer graphene (FLG) samples of thickness from two to six layers, exhibiting both Bernal (AB) and rhombohedral (ABC) stacking order. The LBM vibrations are identified using a Raman combination band lying around 1720 cm(-1). From double resonance theory, we assign …