The self-consistent calculation of the edge states at quantum Hall effect (QHE) based Mach-Zehnder interferometers (MZI)
Date
2008
Authors
Siddiki, A.
Kavruk, A. E.
Öztürk, T.
Atav, U.
Şahin, M.
Hakioǧlu T.
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Supervisor
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Instructor
Source Title
Physica E : Low-Dimensional Systems and Nanostructures
Print ISSN
1386-9477
Electronic ISSN
Publisher
Elsevier B.V.
Volume
40
Issue
5
Pages
1398 - 1400
Language
English
Type
Journal Title
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Volume Title
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Abstract
The spatial distribution of the incompressible edge states (IES) is obtained for a geometry which is topologically equivalent to an electronic Mach-Zehnder interferometer, taking into account the electron-electron interactions within a Hartree type self-consistent model. The magnetic field dependence of these IES is investigated and it is found that an interference pattern may be observed if two IES merge or come very close, near the quantum point contacts. Our calculations demonstrate that, being in a quantized Hall plateau does not guarantee observing the interference behavior.
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Keywords
Edge states , Electronic Mach-Zehnder interferometer , Quantum hall effect , Screening , Electron-electron interactions , Hall effect , Mach-Zehnder interferometers , Magnetic field effects , Mathematical models , Point contacts , Topology , Edge states , Incompressible edge states , Quantum point contacts , Electron energy levels