Three-Dimensional Fractional Topological Insulators in Coupled Rashba Layers
Mesoscale and Nanoscale Physics
2017-08-23 v1
Abstract
We propose a model of three-dimensional topological insulators consisting of weakly coupled electron- and hole-gas layers with Rashba spin-orbit interaction stacked along a given axis. We show that in the presence of strong electron-electron interactions the system realizes a fractional strong topological insulator, where the rotational symmetry and condensation energy arguments still allow us to treat the problem as quasi-one-dimensional with bosonization techniques. We also show that if Rashba and Dresselhaus spin-orbit interaction terms are equally strong, by doping the system with magnetic impurities, one can bring it into the Weyl semimetal phase.
Cite
@article{arxiv.1706.09863,
title = {Three-Dimensional Fractional Topological Insulators in Coupled Rashba Layers},
author = {Yanick Volpez and Daniel Loss and Jelena Klinovaja},
journal= {arXiv preprint arXiv:1706.09863},
year = {2017}
}