Terahertz emission and photoconductivity in n-type GaAs/AlGaAs quantum wells: the role of resonant impurity states

Journal Article · Mon Nov 15 04:00:00 EST 2010 · Semiconductors

DOI:https://doi.org/10.1134/S1063782610110023· OSTI ID:21562192

Shalygin, V A; Panevin, V Yu; Melentyev, G A; Sofronov, A N; Vorobjev, L E ^[1]; Andrianov, A V; Zakhar'in, A O; Mikhrin, V S; Vasil'ev, A P ^[2]; Zhukov, A E ^[3]; Gavrilenko, L V; Gavrilenko, V I; Antonov, A V; Aleshkin, V Ya ^[4]

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1. St. Petersburg State Polytechnic University (Russian Federation)
2. Russian Academy of Sciences, Ioffe Physical Technical Institute (Russian Federation)
3. St. Petersburg Academic University, Research and Education Center for Nanotechnology, Russian Academy of Sciences (Russian Federation)
4. Russian Academy of Sciences, Institute for Physics of Microstructures (Russian Federation)

Terahertz emission spectra in a longitudinal electric field and lateral photoconductivity spectra under terahertz illumination have been studied in structures with GaAs/AlGaAs quantum wells (QWs). It is shown that the spectra contain features associated with electron transitions involving resonant impurity states related to the second quantum-well subband. Calculations of the energy spectrum of impurity states and matrix elements of optical transitions made by taking into account various positions of the impurity relative to the QW center confirm the assumptions made.

• OSTI ID: 21562192
• Journal Information: Semiconductors, Journal Name: Semiconductors Journal Issue: 11 Vol. 44; ISSN SMICES; ISSN 1063-7826
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ARSENIDES
ALUMINIUM COMPOUNDS
ARSENIC COMPOUNDS
ARSENIDES
ELECTRIC CONDUCTIVITY
ELECTRIC FIELDS
ELECTRICAL PROPERTIES
ELECTRONS
ELEMENTARY PARTICLES
EMISSION
EMISSION SPECTRA
ENERGY SPECTRA
FERMIONS
GALLIUM ARSENIDES
GALLIUM COMPOUNDS
IMPURITIES
LEPTONS
MATRIX ELEMENTS
NANOSTRUCTURES
PHOTOCONDUCTIVITY
PHYSICAL PROPERTIES
PNICTIDES
QUANTUM WELLS
SPECTRA