Source and Localization of the PT-Symmetric Terahertz Photoconductivity in Topological Hg1-x Cdx Te – Based Heterostructures

Authors :: A. I. Artamkin
M. I. Bannikov
Nikolai N. Mikhailov
Dmitry Khokhlov
Sergey Danilov
A. V. Ikonnikov
A. S. Kazakov
Ludmila I. Ryabova
A. V. Galeeva
Sergey A. Dvoretsky
Source :: 2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz).
Publication Year :: 2021
Publisher :: IEEE, 2021.
Abstract: We have shown that in heterostructures based on the topological phase Hg 1-x Cd x Te, the properties of two-dimensional topological states formed at the trivial buffer - topological film heterointerface differ from the states at the topological film - vacuum interface, and it is the former that are responsible for the appearance of PT-symmetric photoconductivity. It has been shown that the source of nonequilibrium electrons is the film bulk, while the place of manifestation of the effect is the trivial buffer - topological film heterointerface.

Subjects :: Condensed Matter::Materials Science
Materials science
Terahertz radiation
Condensed Matter::Superconductivity
Photoconductivity
Phase (matter)
Non-equilibrium thermodynamics
Heterojunction
Electron
Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
Topology

Database :: OpenAIRE
Journal :: 2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz)
Accession number :: edsair.doi...........32c483b4fd4634ba5ed7abd81614d747
Full Text :: https://doi.org/10.1109/irmmw-thz50926.2021.9566891

Full Text Access

Tools