Response of a Fermi gas in a disordered system to a phonon flux

Phonon-induced conductivity (PIC) in a strongly elastically scattered two-d imensional electron gas in delta-doped GaAs was studied using the heat-puls e technique. The results of phonoconductivity behavior with carrier tempera ture as well as magnetic field are presented. It was established that PIC i s due to the influence of phonon flux on the temperature-dependent quantum corrections to conductivity through carrier heating. It was shown that the value of PIC is determined both by the absorbed nonequilibrium phonon power and the energy losses to lattice. The value of phonon flux energy absorbed by carriers was estimated from experiment.