Electronic correlations and Fermi liquid behavior of intermediate-band states in titanium-doped silicon

  title={Electronic correlations and Fermi liquid behavior of intermediate-band states in titanium-doped silicon},
  author={Andreas Ostlin and Liviu Chioncel},
  journal={Physical Review B},
We study the nature of the electronic states in the intermediate band formed by interstitial titanium in silicon. Our single-site description combines effects of electronic correlations, captured by dynamical mean-field theory, and disorder, modeled using the coherent potential approximation and the typical medium mean-field theory. For all studied concentrations an extended metallic state with a strongly depleted density of states at the Fermi level is obtained. The self-energy is… 

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