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Optical detection of the absorption of acoustical phonons by a two-dimensional electron gas in a magnetic field (1999)

Zhitomirskii, V. E. ; Volkov, O. V. ; Kukushkin, I. V. ; [et al.]

Springer

JETP letters 69 (1999), S. 31-37

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ISSN: 1090-6487

Keywords: 73.20.Mf ; 73.20.Dx ; 85.30.Mn

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract The effect of absorption of nonequilibrium acoustical phonons on the intensity of recombination of a two-dimensional electron gas in a magnetic field is investigated. The nonequilibrium acoustical phonons are emitted in the relaxation of electrons in a tunnel junction deposited on the back side of a sample with a two-dimensional electronic channel. It is demonstrated that the optical signal showing the intensity of the recombination of nonequilibrium electrons from a photoexcited size-quantization subband can serve as a sensitive detector of acoustical phonons. Because the general heating of two-dimensional carriers and the intersubband transitions stimulated by the absorption of nonequilibrium acoustical phonons lead to effects of different sign, the useful signal can be discriminated unambiguously.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1134/1.567980

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