Tight-Binding Investigation of Thermal Conductivity of Graphene and Few-Layer Graphene Systems

The thermal conductivities of few-layer graphene per stratum are analytically calculated and compared with the single-layer value within the tight-binding Hamiltonian model and Green's function formalism. The results show a decrease in the intra-plane thermal conductivity by increasing the number of layers. Moreover, the change in its magnitude varies less as the number of layers exceeds two.