Abstract
On the basis of quantum Monte Carlo simulations of the two-dimensional Hubbard model which cover the doping range from the underdoped to the overdoped regime, we find that the single-particle spectral weight qualitatively reproduces both the momentum ( symmetry) and doping dependence of the pseudogap as found in photoemission experiments. The drastic doping dependence of the spin response , which is sharp in both and in the underdoped regime but broad and structureless otherwise, identifies remnants of the antiferromagnetic order as the driving mechanism behind the pseudogap and its evolution with doping.
- Received 17 January 1997
DOI:https://doi.org/10.1103/PhysRevLett.79.1122
©1997 American Physical Society