Variational calculation on the disordered t-J model finds superfluid density robust to disorder, monotonically increasing with doping, and linear with optical weight, supporting a Mott transition at the pseudogap end point.
Doping a Mott insulator: Physics of high-temperature superconductivity
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Disorder effect on the superfluid density and the origin of the pseudogap end point in the cuprate superconductors
Variational calculation on the disordered t-J model finds superfluid density robust to disorder, monotonically increasing with doping, and linear with optical weight, supporting a Mott transition at the pseudogap end point.