Blackbody radiation from hot two-dimensional electrons in AlxGa1-xAs/GaAs heterojunctions

K. Hirakawa*, M. Grayson, D. C. Tsui, Ç Kurdak

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

46 Scopus citations

Abstract

We have studied the broad-band far-infrared (FIR) radiation from hot two-dimensional (2D) electrons in selectively doped AlxGa1-xAs/GaAs heterojunctions. The combination of a composite Si bolometer and a magnetic-field-tuned InSb cyclotron resonance filter allows a spectroscopic as well as an intensity analysis of the FIR emission from hot 2D electrons. It is found that the radiation spectra are well explained by the theory of blackbody radiation and the emissivity assuming a classical Drude conductivity. The behavior of the determined effective blackbody temperatures of hot 2D electrons is quantitatively explained by a theory of acoustic- and optical-phonon emissions.

Original languageEnglish (US)
Pages (from-to)16651-16654
Number of pages4
JournalPhysical Review B
Volume47
Issue number24
DOIs
StatePublished - 1993

ASJC Scopus subject areas

  • Condensed Matter Physics

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