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cond-mat.str-el2012★ 10 cited
Mott transitions in the Hubbard model with spatially-modulated interactions
Akihisa Koga, Takamitsu Saitou, Atsushi Yamamoto
We study two-component fermions in optical lattices with spatially alternating on-site interactions using dynamical mean-field theory. Calculating the quasi-particle weight, double…
cond-mat.str-el2012
Metal-Insulator transition in optical lattice system with site-dependent interactions
Takamitsu Saitou, Akihisa Koga, Atsushi Yamamoto
We investigate the half-filled Hubbard model with spatially alternating interactions by means of the two-site dynamical mean-field theory. It is found that a single Mott transition…