NUMERICAL-SIMULATION OF HEAT REMOVAL FROM LOW-DIMENSIONAL NANOSTRUCTURES

The acoustic phonon radiation patterns and acoustic phonon spectra due to electron - acoustic phonon interaction in double barrier quantum w ell have been investigated by solving both the kinetic equations for e lectrons and phonons, The acoustic phonon radiation patterns have stro ngly pronounced maximum in the directions close to the perpendicular t o the quantum well direction. The radiation pattern anisotropy is expl ained in terms of possible electron transitions, nonequilibrium electr on distribution function, and the Hamiltonian of electron-phonon inter actions.