Open AccessTopological plasmon-polariton on a Dirac magnet helical state
Author(s) -
I. V. Iorsh,
Gulnaz Rakhmanova,
M. Titov
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1410/1/012158
Subject(s) - polariton , condensed matter physics , topological insulator , physics , dispersion relation , surface plasmon polariton , plasmon , ferromagnetism , topology (electrical circuits) , surface plasmon , quantum mechanics , mathematics , combinatorics
A one-dimensional plasmon-polariton which is characterized by non-linear dispersion is supported by electromagnetic field interacting with topologically protected helical state. The electronic helical state arises at the surface of topological insulator in the close proximity of the ferromagnet. In a two-dimensional Dirac magnet these electro-optical excitations are limited by domain walls. Topological electronic imagining of domain walls can provide generally a novel tool to couple magnetic dynamics with both transport and optical properties of helical electronic states An exact dispersion relation for the topological plasmon-polariton were obtained.