TheoryHigh-frequency Hall coefficient for the two-dimensional Hubbard model
Review articleOpen access
F.F. Assaad - No affiliation found
1996/05/01 Full-length article DOI: 10.1016/0921-4534(96)00025-1
Journal: Physica C: Superconductivity
AbstractWe numerically calculate the high-frequency Hall coefficient, RH, for the 2D Hubbard model at small hole-doping near half-filling. In the weak-coupling regime RH is electron-like and comparable to its U/t = 0 value. In the strong-coupling regime, where the mapping onto the t model is justified, RH is electron-like with small amplitude in the temperature regimes and hole-like in the temperature regime. Our conclusions are consistent with the picture of 1418 1 a Mott transition driven by the divergence of the effective mass as opposed to the vanishing of the number of charge carriers. This conclusion is valid in the strong- and weak-coupling regimes.
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