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

Journal Article · Fri Nov 28 00:00:00 EST 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4902398· OSTI ID:22402689

Sychev, D. V.; Kapustin, A. A. ^[1]

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1. Institute of Solid State Physics RAS, 142432 Chernogolovka, Moscow district (Russian Federation)

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.

• OSTI ID: 22402689
• Journal Information: Journal of Applied Physics, Vol. 116, Issue 20; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

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