Integer and Fractional Quantum Anomalous Hall Effect in a Strip of Stripes Model
Mesoscale and Nanoscale Physics
2015-06-23 v1
Abstract
We study the quantum anomalous Hall effect in a strip of stripes model coupled to a magnetic texture with zero total magnetization and in the presence of strong electron-electron interactions. A helical magnetization along the stripes and a spin-selective coupling between the stripes gives rise to a bulk gap and chiral edge modes. Depending on the ratio between the period of the magnetic structure and the Fermi wavelength, the system can exhibit the integer or fractional quantum anomalous Hall effect. In the fractional regime, the quasiparticles have fractional charges and non-trivial Abelian braid statistics.
Keywords
Cite
@article{arxiv.1412.0548,
title = {Integer and Fractional Quantum Anomalous Hall Effect in a Strip of Stripes Model},
author = {Jelena Klinovaja and Yaroslav Tserkovnyak and Daniel Loss},
journal= {arXiv preprint arXiv:1412.0548},
year = {2015}
}