Observable Zero Sound in Strongly Correlated Metals
Condensed Matter
2009-10-22 v1
Abstract
The slow zero-sound mode expected near the Mott transition in strongly interacting two-dimensional Fermi systems that are neutral is shown to persist as the physical sound mode in the case that the fermion carries electronic charge and is embedded in a positive ionic background. The latter sound velocity softens completely precisely at the Mott transition, indicating that a zone-center structural transition will occur in the system. We suggest that this phonon-softening mechanism is related to the structural transitions commonly observed in the oxide superconductors.
Cite
@article{arxiv.cond-mat/9408096,
title = {Observable Zero Sound in Strongly Correlated Metals},
author = {J. P. Rodriguez},
journal= {arXiv preprint arXiv:cond-mat/9408096},
year = {2009}
}
Comments
12 pgs, TeX, Accepted for publication in Physical Review Letters