Metastable states and their resonant electron-phonon interaction of shallow donors in GaAs and InP

In this paper, we report the Fourier transform infrared photoconductivity measurements and theoretical comparison of the magnetic field induced metastable states of the shallow donors in GaAs and InP. The transitions from the ground bound state to the metastable states of Si donors are observed and identified. A simplified trial wave-function is applied to these metastable states and the theoretical calculations are in good agreement with our experimental data. The electron-phonon interaction of the metastable states, which results in the magneto-polaron effect and the bound phonon effect, are investigated.