Chiral plasmon in gapped Dirac systems
Mesoscale and Nanoscale Physics
2017-07-10 v3 Optics
Abstract
We study the electromagnetic response and surface electromagnetic modes in a generic gapped Dirac material under pumping with circularly polarized light. The valley imbalance due to pumping leads to a net Berry curvature, giving rise to a finite transverse conductivity. We discuss the appearance of nonreciprocal chiral edge modes, their hybridization and waveguiding in a nanoribbon geometry, and giant polarization rotation in nanoribbon arrays.
Cite
@article{arxiv.1509.00790,
title = {Chiral plasmon in gapped Dirac systems},
author = {Anshuman Kumar and Andrei Nemilentsau and Kin Hung Fung and George Hanson and Nicholas X. Fang and Tony Low},
journal= {arXiv preprint arXiv:1509.00790},
year = {2017}
}