Destruction of Strong Critical Spin Fluctuations by Doping in the 2D Hubbard Model
Condensed Matter
2007-05-23 v2
Abstract
We present the doping dependence of the spectral functions, density of states and low frequency behavior of the self-energy for the 2D Hubbard model on the basis of our recently developed theory for the Hubbard model. Strong 2D critical spin fluctuations dominating near half-filling are completely destroyed by 13 and 20 percent doping concentrations for U=4 and 8, respectively. Below these concentrations the imaginary part of the self-energy vanishes quadratically in frequency near the Fermi energy, a characteristic feature for the Fermi liquid.
Cite
@article{arxiv.cond-mat/9802129,
title = {Destruction of Strong Critical Spin Fluctuations by Doping in the 2D Hubbard Model},
author = {Bumsoo Kyung},
journal= {arXiv preprint arXiv:cond-mat/9802129},
year = {2007}
}
Comments
4 pages, revtex, 5 figures