Spin-Dependent Phonon-Assisted Optical Transitions in Germanium

ORAL

Abstract

We study the circular polarization of the photoluminescence due to phonon-assisted indirect optical transitions in Germanium. The band structure is calculated by empirical pseudopotential method with the spin-orbit interaction. Phonon modes are obtained by the adiabatic bond charge model and the L - $\Gamma$ electron-phonon matrix elements are calculated within the rigid-ion approximation. We have used group theory extensively to account for all possible transitions. We quantify the circular polarization of various phonon-assisted optical transitions.

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Authors

  • Dhara Trivedi

    Department of Physics, University Of Rochester

  • Pengke Li

    Department of Electrical and Computer Engineering, University of Rochester

  • Hanan Dery

    Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627, Department of Physics \& Department of Electrical and Computer Engineering, University Of Rochester, University of Rochester