Electronic properties of the Hubbard model on a frustrated triangular lattice

  title={Electronic properties of the Hubbard model on a frustrated triangular lattice},
  author={Bumsoo Kyung},
  journal={Physical Review B},
  • B. Kyung
  • Published 2007
  • Physics
  • Physical Review B
We study novel electronic properties of the Hubbard model on a triangular lattice using the cellular dynamical mean-field theory. The interplay of strong geometric frustration and electron correlations causes a Mott transition at the Hubbard interaction $U/t=10.5$ and an unusual suppression of low energy spin excitations. Doping of a triangular Mott insulator leads to a quasiparticle peak (no pseudogap) at the Fermi surface and to an unexpected increase of low energy spin excitations, in stark… Expand
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