  Recent studies strongly indicate that graphene can be used as a channel
material for converting surface acoustic waves to acoustoelectric current,
which is a resource for various exciting technological applications. On the
theoretical side, studies on phonon amplification/attenuation and
acoustoelectric current at low temperatures in graphene have reported
approximate analytical results under exceedingly simplifying conditions using
the Boltzmann transport equation. Overcoming the earlier simplifying
assumptions, we investigate both numerically and analytically the governing
kinetic equations for amplification/attenuation and acoustoelectric current,
taking into account the piezoelectric and deformation potential electron phonon
coupling mechanism in the semi classical Boltzmann transport formalism
approach, and obtain analytical results that are in reasonable agreement with
the reported experimental results.
