• Electron-confined LO-phonon scattering in GaAs-Al0.45Ga0.55As superlattice

    • Fulltext


        Click here to view fulltext PDF

      Permanent link:

    • Keywords


      Confined LO-phonon; scattering; superlattice; miniband; relaxation time

    • Abstract


      We develop a theoretical model to the scattering time due to the electron-confined LO-phonon in GaAs-AlxGa1-xAs superlattice taking into account the sub-band parabolicity. Using the new analytic wave function of electron miniband conduction of superlattice and a reformulation slab model for the confined LO-phonon modes, an expression for the electron-confined LO-phonon scattering time is obtained. In solving numerically a partial differential equation for the phonon generation rate, our results show that forx = 0.45, the LO-phonon in superlattice changes from a bulk-like propagating mode to a confined mode. The dispersion of the relaxation time due to the emission of confined LO-phonons depends strongly on the total energy.

    • Author Affiliations


      D Abouelaoualim1

      1. Physics Department, Faculty of Sciences-Semlalia, L.P.S.C.M., BP:2390, Marrakech - 40000, Morocco
    • Dates

  • Pramana – Journal of Physics | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2021-2022 Indian Academy of Sciences, Bengaluru.