Dimensional-crossover-driven Mott transition in the frustrated Hubbard model.

@article{Raczkowski2012DimensionalcrossoverdrivenMT,
  title={Dimensional-crossover-driven Mott transition in the frustrated Hubbard model.},
  author={M. Raczkowski and Fakher F. Assaad},
  journal={Physical review letters},
  year={2012},
  volume={109 12},
  pages={
          126404
        }
}
We study the Mott transition in a frustrated Hubbard model with next-nearest neighbor hopping at half-filling. The interplay between interaction, dimensionality, and geometric frustration closes the one-dimensional Mott gap and gives rise to a metallic phase with Fermi surface pockets. We argue that they emerge as a consequence of remnant one-dimensional umklapp scattering at the momenta with vanishing interchain hopping matrix elements. In this pseudogap phase, enhanced d-wave pairing… 

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