Electronic energy spectroscopy of monochromatic edge magnetoplasmons in the quantum Hall regime

We investigate electronic excitation in a quantum Hall edge channel when a monochromatic plasmon wave is excited by applying a radio-frequency voltage to a long surface gate on an AlGaAs/GaAs heterostructure. A quantum-dot energy spectrometer is employed to evaluate the amplitude of the potential wa...

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Bibliographic Details
Published inJournal of physics. Condensed matter Vol. 30; no. 34; p. 345301
Main Authors Ota, Tomoaki, Hashisaka, Masayuki, Muraki, Koji, Fujisawa, Toshimasa
Format Journal Article
LanguageEnglish
Published England IOP Publishing 30.08.2018
Subjects
edge channel
edge plasmon
quantum Hall effect
quantum-dot spectroscopy
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Summary:We investigate electronic excitation in a quantum Hall edge channel when a monochromatic plasmon wave is excited by applying a radio-frequency voltage to a long surface gate on an AlGaAs/GaAs heterostructure. A quantum-dot energy spectrometer is employed to evaluate the amplitude of the potential wave and possible electronic heating. The potential wave is analyzed with a capacitance model. Non-monotonic frequency dependence observed under specific conditions can be explained by destructive plasmon interference in the gated region. The observed small heating effect suggests that the single plasmon mode is dominantly excited with this scheme.
Bibliography:JPCM-111900.R2
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ISSN:0953-8984
1361-648X
DOI:10.1088/1361-648X/aad220