Quantum Confinement Effects in Dynamically Screened Quasi-One-Dimensional Systems

  • Received Date: January 20, 2013
  • Revised Date: May 27, 2013
  • Published Date: May 31, 2013
  • We theoretically study the quantum confinement effects on the self-energies of electrons and holes in quasi-one-dimensional semiconductor systems. It is found that the effective Coulomb interactions are enhanced with the increase in lateral confinement and the decrease in confinement size. The single-particle self-energies of electrons and holes are calculated in dynamic plasmon pole approximation within the GW approximation, where G refers to Green's function and W is the dynamically screened Coulomb interaction. The real and imaginary parts of the self-energies have a strong dependence on the effective Coulomb interactions.
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