Wigner crystal vs. Friedel oscillations in the 1D Hubbard model
Strongly Correlated Electrons
2011-12-19 v3 Mesoscale and Nanoscale Physics
Other Condensed Matter
Abstract
We analyze the fermion density of the one-dimensional Hubbard model using bosonization and numerical DMRG calculations. For finite systems we find a relatively sharp crossover even for moderate short range interactions into a region with density waves as a function of density. The results show that the unstable fixed point of a spin-incoherent state can dominate the physical behavior in a large region of parameter space in finite systems. The crossover may be observable in ultra cold fermionic gases in optical lattices and in finite quantum wires.
Cite
@article{arxiv.0808.0008,
title = {Wigner crystal vs. Friedel oscillations in the 1D Hubbard model},
author = {Stefan A. Soeffing and Michael Bortz and Imke Schneider and Alexander Struck and Michael Fleischhauer and Sebastian Eggert},
journal= {arXiv preprint arXiv:0808.0008},
year = {2011}
}
Comments
6 pages, 6 figures. Published version. The most recent file can be found at http://www.physik.uni-kl.de/eggert/papers/index.html