1997/01/16 by R. Preuss, W. Hanke, C. Gröber +2 · 5 citations
Physics and Astronomy · #Advanced Condensed Matter Physics #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.79.1122
published as Phys. Rev. Lett. 79, 1122 (1997) · 4 pages, Rev-Tex, includes 3 figures
arxiv created 1997/01/16 · openalex publication_date 1997/08/11 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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 A(\stackrel\ensuremath→k,\ensuremathω) qualitatively reproduces both the momentum ( d_x2\ensuremath-y2 symmetry) and doping dependence of the pseudogap as found in photoemission experiments. The drastic doping dependence of the spin response \ensuremathχs(\stackrel\ensuremath→q,\ensuremathω), which is sharp in both \stackrel\ensuremath→q[\ensuremath≈(\ensuremathπ,\ensuremathπ)] and \ensuremathω 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.