Noninvasive Probe of Charge Fractionalization in Quantum Spin-Hall Insulators
Mesoscale and Nanoscale Physics
2012-05-31 v2 Strongly Correlated Electrons
Abstract
When an electron with well-defined momentum tunnels into a nonchiral Luttinger liquid, it breaks up into two separate wave packets that carry fractional charges and move in opposite directions. A direct observation of this phenomenon has proven elusive, mainly due to single-particle and plasmon backscattering caused by measurement probes. This paper theoretically introduces two topological insulator devices that are naturally suited for detecting fractional charges and their velocities directly and in a noninvasive fashion.
Keywords
Cite
@article{arxiv.1111.4581,
title = {Noninvasive Probe of Charge Fractionalization in Quantum Spin-Hall Insulators},
author = {Ion Garate and Karyn Le Hur},
journal= {arXiv preprint arXiv:1111.4581},
year = {2012}
}
Comments
Revised and extended version. To appear in PRB