Topological cutoff frequency in a slab waveguide: Penetration length in topological insulator walls
Mesoscale and Nanoscale Physics
2016-04-26 v4
Abstract
We study the propagation of electromagnetic (EM) waves in a slab-type waveguide which walls consist of three-dimensional topological insulator (3D TI). The results show that a cutoff frequency with topological stability limits the spectrum that propagates along the waveguide and are in agreement with experimental observations. Our approach also provides a way to measure the penetration length of surface metallic states in 3D TI.
Keywords
Cite
@article{arxiv.1507.04038,
title = {Topological cutoff frequency in a slab waveguide: Penetration length in topological insulator walls},
author = {Thiago M. Melo and Davidson R. Viana and Winder A. Moura-Melo and Jackson M. Fonseca and Afranio R. Pereira},
journal= {arXiv preprint arXiv:1507.04038},
year = {2016}
}
Comments
5 pages,3 figures