7 research outputs found
Pseudogap, van Hove Singularity, Maximum in Entropy and Specific Heat for Hole-Doped Mott Insulators
The first indication of a pseudogap in cuprates came from a sudden decrease
of NMR Knight shift at a doping-dependent temperature . Since
then, experiments have found phase transitions at a lower
. Using plaquette cellular dynamical mean-field for
the square-lattice Hubbard model at high temperature, where the results are
reliable, we show that shares many features of
. The remarkable agreement with several experiments,
including quantum critical behavior of the electronic specific heat, supports
the view that the pseudogap is controlled by a finite-doping extension of the
Mott transition. We propose further experimental tests.Comment: LaTeX, 2 figures, 6 page