Comparing Of Broading Width Changing Effects On Optical Conductivity In Double And Bilayer Graphene

In this paper Optical Conductivity has been calculated using Imaginary part of dielectric function , which is obtained from electron density_density corrolation function. Then total optical coductivity due to intra and inter band transitions is caculated , and ploted numercally as a function of photon energy for double and bi_layer graphene, in different broadening width and constant electron density. Finally results are discussed and evaluated