Renormalization of the Cyclotron Frequency in a Screened Two-Dimensional Electron System with Strong Retardation

Resonant microwave absorption by two-dimensional electron systems based on GaAs/AlGaAs heterostructures with a metallic back gate is investigated. The regime where the velocity of a screened plasma wave in a two-dimensional system calculated in the quasi-static approximation exceeds the speed of lig...

Full description

Saved in:
Bibliographic Details
Published in:JETP letters 2021-11, Vol.114 (10), p.616-619
Main Authors: Semenov, N. D., Muravev, V. M., Andreev, I. V., Kukushkin, I. V.
Format: Article
Language:English
Subjects:
Atomic
Biological and Medical Physics
Biophysics
Condensed Matter
Cyclotron frequency
Heterostructures
Microwave absorption
Molecular
Optical and Plasma Physics
Particle and Nuclear Physics
Physics
Physics and Astronomy
Plasma frequencies
Plasma waves
Plasmons
Quantum Information Technology
Solid State Physics
Spintronics
Substrates
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Resonant microwave absorption by two-dimensional electron systems based on GaAs/AlGaAs heterostructures with a metallic back gate is investigated. The regime where the velocity of a screened plasma wave in a two-dimensional system calculated in the quasi-static approximation exceeds the speed of light in the substrate is obtained. It is established that relativistic retardation-related effects in this situation lead to significant changes in the dispersion and magnetic-field behavior of screened two-dimensional plasmons. It is found that the retardation effects result in the pronounced renormalization of the cyclotron and plasma frequencies. There is good agreement between the experimental results and the existing theory.
ISSN:0021-3640
1090-6487
DOI:10.1134/S0021364021220112