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Title: Bolometric detection of magnetoplasma resonances in microwave absorption by two-dimensional electron systems based on doping layer conductivity measurements in GaAs/AlGaAs heterostructures

We have implemented a new bolometric method to detect resonances in magneto-absorption of microwave radiation by two-dimensional electron systems (2DES) in selectively doped GaAs/AlGaAs heterostructures. Radiation is absorbed by the 2DES and the thermally activated conductivity of the doping layer supplying electrons to the 2DES serves as a thermometer. The resonant absorption brought about by excitation of the confined magnetoplasma modes appears as peaks in the magnetic field dependence of the low-frequency impedance measured between the Schottky gate and 2DES.
Authors:
; ;  [1]
  1. Institute of Solid State Physics RAS, 142432 Chernogolovka, Moscow district (Russian Federation)
Publication Date:
OSTI Identifier:
22402689
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 116; Journal Issue: 20; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ALUMINIUM ARSENIDES; BOLOMETERS; DETECTION; DOPED MATERIALS; GALLIUM ARSENIDES; IMPEDANCE; LAYERS; MAGNETIC FIELDS; MICROWAVE RADIATION; PEAKS; PLASMA; RESONANCE; THERMOMETERS