Magnetic phase diagram of the Hubbard model
Condensed Matter
2009-10-22 v1
Abstract
The competition between commensurate and incommensurate spin-density-wave phases in the infinite-dimensional single-band Hubbard model is examined with quantum Monte Carlo simulation and strong and weak coupling approximations. Quantum fluctuations modify the weak-coupling phase diagram by factors of order unity and produce remarkable agreement with the quantum Monte Carlo data, but strong-coupling theories (that map onto effective Falicov-Kimball models) display pathological behavior. The single-band model can be used to describe much of the experimental data in Cr and its dilute alloys with V and Mn.
Keywords
Cite
@article{arxiv.cond-mat/9407101,
title = {Magnetic phase diagram of the Hubbard model},
author = {J. K. Freericks and Mark Jarrell},
journal= {arXiv preprint arXiv:cond-mat/9407101},
year = {2009}
}
Comments
12 pages plus 3 uuencoded postscript figures, ReVTeX