Fractional charge excitations in fermionic ladders
Strongly Correlated Electrons
2012-07-31 v1
Abstract
The system of interacting spinless fermions hopping on a two-leg ladder in the presence of an external magnetic field is shown to possess a long range order: the bond density wave or the staggered flux phase. In both cases the elementary excitations are kinks and carry one half the charge of an electron.
Cite
@article{arxiv.cond-mat/0407593,
title = {Fractional charge excitations in fermionic ladders},
author = {B. N. Narozhny and S. T. Carr and A. A. Nersesyan},
journal= {arXiv preprint arXiv:cond-mat/0407593},
year = {2012}
}
Comments
4 pages, 3 figures