Current enhancement through a time dependent constriction in fractional topological insulators
Mesoscale and Nanoscale Physics
2014-10-10 v1 Strongly Correlated Electrons
Abstract
We analyze the backscattering current induced by a time dependent constriction as a tool to probe fractional topological insulators. We demonstrate an enhancement of the total current for a fractional topological insulator induced by the dominant tunneling excitation, contrary to the decreasing present in the integer case for not too strong interactions. This feature allows to unambiguously identify fractional quasiparticles. Furthermore, the dominant tunneling processes, which may involve one or two quasiparticles depending on the interactions, can be clearly determined.
Keywords
Cite
@article{arxiv.1409.3715,
title = {Current enhancement through a time dependent constriction in fractional topological insulators},
author = {Giacomo Dolcetto and Luca Vannucci and Alessandro Braggio and Roberto Raimondi and Maura Sassetti},
journal= {arXiv preprint arXiv:1409.3715},
year = {2014}
}
Comments
6 pages, 3 figures