A question about the scattering rate in graphene modeling


#1

https://kb.lumerical.com/en/other_application_graphene_simulation_tips.html#volumetric_permittivity_approach
In the volume permitivity modeling method of graphene, how comes the equation (9)?


#2

This is the relaxation time. The way that it is defined is based on equation (8) on the same page. For more information how the equation can be derived, the Falkovsky paper should be a good reference - #2 related publication on the same KB page that you have quoted.