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Title: Pseudogaps and Their Interplay with Magnetic Excitations in the Doped 2D Hubbard Model

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 A({rvec k},{omega}) qualitatively reproduces both the momentum (d{sub x{sup 2}{minus}y{sup 2}} symmetry) and doping dependence of the pseudogap as found in photoemission experiments. The drastic doping dependence of the spin response {chi}{sub s}({rvec q},{omega}), which is sharp in both {rvec q}[{approx}({pi},{pi})] and {omega} 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. {copyright} {ital 1997} {ital The American Physical Society}

Authors:
; ; ;  [1]
  1. Institut fuer Theoretische Physik, Am Hubland, D-97074 Wuerzburg (Germany)
Publication Date:
OSTI Identifier:
528146
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 79; Journal Issue: 6; Other Information: PBD: Aug 1997
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; HIGH-TC SUPERCONDUCTORS; HUBBARD MODEL; ENERGY GAP; DOPED MATERIALS; COMPUTERIZED SIMULATION; MONTE CARLO METHOD; PHOTOEMISSION; ANTIFERROMAGNETISM; ELECTRONIC STRUCTURE

Citation Formats

Preuss, R, Hanke, W, Groeber, C, and Evertz, H G. Pseudogaps and Their Interplay with Magnetic Excitations in the Doped 2D Hubbard Model. United States: N. p., 1997. Web. doi:10.1103/PhysRevLett.79.1122.
Preuss, R, Hanke, W, Groeber, C, & Evertz, H G. Pseudogaps and Their Interplay with Magnetic Excitations in the Doped 2D Hubbard Model. United States. doi:10.1103/PhysRevLett.79.1122.
Preuss, R, Hanke, W, Groeber, C, and Evertz, H G. Fri . "Pseudogaps and Their Interplay with Magnetic Excitations in the Doped 2D Hubbard Model". United States. doi:10.1103/PhysRevLett.79.1122.
@article{osti_528146,
title = {Pseudogaps and Their Interplay with Magnetic Excitations in the Doped 2D Hubbard Model},
author = {Preuss, R and Hanke, W and Groeber, C and Evertz, H G},
abstractNote = {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({rvec k},{omega}) qualitatively reproduces both the momentum (d{sub x{sup 2}{minus}y{sup 2}} symmetry) and doping dependence of the pseudogap as found in photoemission experiments. The drastic doping dependence of the spin response {chi}{sub s}({rvec q},{omega}), which is sharp in both {rvec q}[{approx}({pi},{pi})] and {omega} 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. {copyright} {ital 1997} {ital The American Physical Society}},
doi = {10.1103/PhysRevLett.79.1122},
journal = {Physical Review Letters},
number = 6,
volume = 79,
place = {United States},
year = {1997},
month = {8}
}