Theoretical Investigation Of The Lattice Vibration Of Gaas/Srtio3

The one-dimensional atom chain with the multi-neighbor interactions is studied as a simplified model for the lattice vibration of ferroelectric with the long-range Coulomb interaction. The real space method to investigate the lattice dynamic of the non-perfect lattice is introduced. The combined one-dimensional chain model to simulate GaAs/SrTiO3 system is proposed and the Raman spectrum is analyzed.