The place DA is definitely the deformation potential in graphene, kB will be the Boltzmann continual, e would be the electron charge, ℏ Graphene growth by thermal decomposition of silicon carbide (SiC) is a method that creates wafer-scale, solitary-orientation graphene on an insulating substrate. It is usually often called epigraphene, https://x.com/Anumhsite/status/1809237341506306393