Theory of thermopower in two-dimensional graphene

@article{Hwang2009TheoryOT,
  title={Theory of thermopower in two-dimensional graphene},
  author={E. H. Hwang and Enrico Rossi and Sankar Das Sarma},
  journal={Physical Review B},
  year={2009},
  volume={80},
  pages={235415}
}
Motivated by recent experiments by Yuri M. Zuev et al. [Phys. Rev. Lett. 102, 096807 (2009)], Peng Wei et al. [Phys. Rev. Lett. 102, 166808 (2009)], and Joseph G. Checkelsky et al. [Phys. Rev. B 80, 081413(R) (2009)], we calculate the thermopower of graphene incorporating the energy dependence of various transport scattering times. We find that scattering by screened charged impurities gives a reasonable explanation for the measured thermopower. The calculated thermopower behaves as $1/\sqrt{n… 

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