Electronic thermal conductivity of graphene nanoribbons

The electronic thermal conductivity, κ_e, of semiconducting armchair graphene nanoribbons (GNRs) for T < 400 K is studied. Electrons are assumed to be confined to the lowest subband and scattered by edge roughness, layer impurities, acoustic phonons and optical phonons via deformation potential couplings. Numerical calculations of κ_e, as function of temperature are presented. The relative importance of carrier scattering mechanisms operative and the effect of ribbon width on κ_e are studied.