Mechanism of terahertz photoconductivity in semimetallic HgTe/CdHgTe quantum wells

Mechanism of terahertz photoconductivity in semimetallic HgTe/CdHgTe quantum wells

Terahertz photoconductivity in magnetic fields in semimetallic HgTe/CdHgTe quantum wells has been studied. The main contribution to photoconductivity comes from a signal that appears as a result of electron-gas heating. It is shown that, with the cyclotron resonance conditions satisfied, the photoco...

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Veröffentlicht in:Semiconductors (Woodbury, N.Y.) N.Y.), 2012-05, Vol.46 (5), p.655-658
Hauptverfasser: Vasilyev, Yu. B., Mikhailov, N. N., Gouider, F., Vasilyeva, G. Yu, Nachtwei, G.
Format: Artikel
Sprache:eng
Schlagworte:
BOLOMETERS
CYCLOTRON RESONANCE
ELECTRON GAS
HEATING
Low-Dimensional Systems
MAGNETIC FIELDS
Magnetic Materials
Magnetism
MATERIALS SCIENCE
MERCURY TELLURIDES
PHOTOCONDUCTIVITY
Physics
Physics and Astronomy
Quantum Phenomena
QUANTUM WELLS
Semiconductor Structures
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Zusammenfassung:Terahertz photoconductivity in magnetic fields in semimetallic HgTe/CdHgTe quantum wells has been studied. The main contribution to photoconductivity comes from a signal that appears as a result of electron-gas heating. It is shown that, with the cyclotron resonance conditions satisfied, the photoconductivity signal is composed of cyclotron-resonance and bolometric components. However, in this case too, the bolometric contribution predominates.
ISSN:1063-7826
1090-6479
DOI:10.1134/S1063782612050247