2019/05/31 by A. Reymbaut, S. Bergeron, R. Garioud +4 · 1 citation
Physics and Astronomy · #cond-mat.str-el
paper · pdf · doi:10.1103/physrevresearch.1.023015
published as Phys. Rev. Research 1, 023015 (2019) · LaTeX, 2 figures, 6 pages
arxiv created 2019/09/21 · arxiv updated 2019/09/24
The first indication of a pseudogap in cuprates came from a sudden decrease of NMR Knight shift at a doping-dependent temperature T^*(δ). Since then, experiments have found phase transitions at a lower T^*phase(δ). Using plaquette cellular dynamical mean-field for the square-lattice Hubbard model at high temperature, where the results are reliable, we show that T^*(δ) shares many features of T^*phase(δ). 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.