Optical conductivity of ABA stacked graphene trilayer: mid-IR resonance due to band nesting
Optical conductivity of ABA stacked graphene trilayer: mid-IR resonance due to band nesting
The band structure and the optical conductivity of an ABA (Bernal-type) stacked graphene trilayer are calculated. It is shown that, under appropriate doping, a strong resonant peak develops in the optical conductivity, located at the frequency corresponding to approximately 1.4 times the interlayer hopping energy and caused by the 'nesting' …