Metal-insulator transition in a weakly interacting disordered electron system

  title={Metal-insulator transition in a weakly interacting disordered electron system},
  author={Chinedu E. Ekuma and S.-X. Yang and Hanna Terletska and Ka-Ming Tam and N. S. Vidhyadhiraja and Juana Moreno and Mark Jarrell},
  journal={Physical Review B},
The interplay of interactions and disorder is studied using the Anderson-Hubbard model within the typical medium dynamical cluster approximation. Treating the interacting, non-local cluster self-energy ($\Sigma_c[{\cal \tilde{G}}](i,j\neq i)$) up to second order in the perturbation expansion of interactions, $U^2$, with a systematic incorporation of non-local spatial correlations and diagonal disorder, we explore the initial effects of electron interactions ($U$) in three dimensions. We find… Expand

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