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Title: Plasmon dispersions in high electron mobility terahertz detectors

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.
Authors:
;  [1] ;  [2] ;  [2] ;  [3] ;  [4]
  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. (Poland)
  4. Weizmann Institute of Science, Rehevot 76100 (Israel)
Publication Date:
OSTI Identifier:
22303916
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 26; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
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