Modulated Floquet Topological Insulators
Strongly Correlated Electrons
2013-04-02 v3 Mesoscale and Nanoscale Physics
Abstract
Floquet topological insulators are topological phases of matter generated by the application of time-periodic perturbations on otherwise conventional insulators. We demonstrate that spatial variations in the time-periodic potential lead to localized quasi-stationary states in two-dimensional systems. These states include one-dimensional interface modes at the nodes of the external potential, and fractionalized excitations at vortices of the external potential. We also propose a setup by which light can induce currents in these systems. We explain these results by showing a close analogy to px+ipy superconductors.
Cite
@article{arxiv.1206.3315,
title = {Modulated Floquet Topological Insulators},
author = {Yaniv Tenenbaum Katan and Daniel Podolsky},
journal= {arXiv preprint arXiv:1206.3315},
year = {2013}
}