title: Simulation of the NMR response in the pseudogap regime of the cuprates.
abstract: The pseudogap in the cuprate high-temperature superconductors was discovered as a suppression of the Knight shift and spin relaxation time measured in nuclear magnetic resonance (NMR) experiments. However, theoretical understanding of this suppression in terms of the magnetic susceptiblility of correlated itinerant fermion systems was so far lacking. Here we study the temperature and doping evolution of these quantities on the two-dimensional Hubbard model using cluster dynamical mean field theory. We recover the suppression of the Knight shift and the linear-in-T spin echo decay that increases with doping. The relaxation rate shows a marked increase as T is lowered but no indication of a pseudogap on the Cu site, and a clear downturn on the O site, consistent with experimental results on single layer materials but different from double layer materials. The consistency of these results with experiment suggests that the pseudogap is well described by strong short-range correlation effects.
authors.affiliation: Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA.
authors.forename: Xi
authors.initials: X
authors.lastname: Chen
authors.affiliation: Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA.|Department of Physics and Physical Oceanography, The Memorial University of Newfoundland, St John's, Newfoundland and Labrador, Canada, A1B 3X9.
authors.forename: J P F
authors.initials: JP
authors.lastname: LeBlanc
authors.affiliation: Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA.
authors.forename: Emanuel
authors.identifier: 0000-0002-6082-1260
authors.initials: E
authors.lastname: Gull