Plasmon dispersions in high electron mobility terahertz detectors

Journal Article · Mon Jun 30 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4886970· OSTI ID:22303916

Łusakowski, J. ^[1]; Czapkiewicz, M. ^[2]; Wróbel, J. ^[2]; Umansky, V. ^[3]

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1. Faculty of Physics, University of Warsaw, ul. Hoża 69, 00-681 Warsaw (Poland)
2. Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw (Poland)
3. Weizmann Institute of Science, Rehevot 76100 (Israel)

Low temperature, high magnetic field experiments were carried out with monochromatic terahertz (THz) sources to reveal multimode spectra of magnetoplasmons excited in gated and ungated samples processed on a high electron mobility GaAs/AlGaAs heterostructure. We show that playing with the geometry and thickness of the gate one can control both the plasmon dispersion relation and selection rules for plasmon excitation, giving a tool to a better control of plasmon resonances in THz detectors.

• OSTI ID: 22303916
• Journal Information: Applied Physics Letters, Vol. 104, Issue 26; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM COMPOUNDS
DISPERSION RELATIONS
DISPERSIONS
ELECTRON MOBILITY
EXCITATION
GALLIUM ARSENIDES
MAGNETIC FIELDS
MONOCHROMATIC RADIATION
RESONANCE
SELECTION RULES
SPECTRA
THICKNESS