Topological entanglement entropy of interacting disordered zigzag graphene ribbons
Strongly Correlated Electrons
2021-04-07 v2 Mesoscale and Nanoscale Physics
High Energy Physics - Theory
Quantum Physics
Abstract
Interacting disordered zigzag graphene nanoribbons have fractional charges, are quasi-one-dimensional, and display an exponentially small gap. Our numerical computations showed that the topological entanglement entropy of these systems has a small finite but universal value, independent of the strength of the interaction and the disorder. The result that was obtained for the topological entanglement entropy shows that the disorder-free phase is critical and becomes unstable in the presence of disorder.
Keywords
Cite
@article{arxiv.2011.13720,
title = {Topological entanglement entropy of interacting disordered zigzag graphene ribbons},
author = {Young Heon Kim and Hye Jeong Lee and S. -R. Eric Yang},
journal= {arXiv preprint arXiv:2011.13720},
year = {2021}
}
Comments
4 pages, 4 figures, new figures added; to be published in PRB