Transport theory within a generalized Boltzmann equation for multiband wave packets

Transport theory within a generalized Boltzmann equation for multiband wave packets

Blog Article

A generalized theory for transport under applied electrochemical potential and temperature gradients that includes multiband effects is presented.This theory relies on a newly defined density operator for multiband wave packets, whose dynamics containing diffusive and scattering contributions are captured in a generalized equation of motion.Given that the Neff B47VR32N0B Slide multiband energy structure determines the transport explicitly, the case of N degenerate bands within an isotropic constant relaxation time is considered as a particular case for illustration.Electric and thermal currents as well scrunchies as transport properties are obtained through linear response and comparison to transport in a single band wave packet is provided.Our theory opens avenues for studying novel multiband effects and scattering processes in transport beyond the semiclassical single band approach.