Acoustic edge magnetoplasmons and the quantum Hall effect

The nonequilibrium properties of integer channels that affect the magnetoplasma dynamics of degenerate, regularly inhomogeneous 2D electron systems under integral quantum Hall conditions are discussed. It is shown that the presence of an integer strip near the perimeter of a 2D electron system with...

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Bibliographic Details
Published in:Low temperature physics (Woodbury, N.Y.) N.Y.), 2017-01, Vol.43 (1), p.120-124
Main Authors: Shikin, V., Nazin, S.
Format: Article
Language:English
Subjects:
Acoustic properties
Channels
Electron density
Electron density profiles
Electrons
Magnetic properties
Plasma (physics)
Quantum Hall effect
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Summary:The nonequilibrium properties of integer channels that affect the magnetoplasma dynamics of degenerate, regularly inhomogeneous 2D electron systems under integral quantum Hall conditions are discussed. It is shown that the presence of an integer strip near the perimeter of a 2D electron system with a “soft” electron density profile should quench some of the acoustic modes in the edge magnetoplasmon spectrum of the electron disk in a magnetic field normal to its surface. This effect is observed experimentally and could be used for diagnostics of the properties of integer channels in variable electric fields.
ISSN:1063-777X
1090-6517
DOI:10.1063/1.4975106