Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2009-09-07
Phys. Rev. B 80, 073303, (2009)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
4 pages, 2 Figures
Scientific paper
Precise absolute far-infra-red magneto-transmission experiments have been performed in magnetic fields up to 33 T on a series of single GaAs quantum wells doped at different levels. The transmission spectra have been simulated with a multilayer dielectric model. The imaginary part of the optical response function which reveals new singular features related to the electron-phonon interactions has been extracted. In addition to the expected polaronic effects due to the longitudinal optical (LO) phonon of GaAs, a new kind of carrier concentration dependent interaction with interface phonons is observed. A simple physical model is used to try to quantify these interactions and explore their origin.
Deutschlander S.
Faugeras Clement
Friedland Klaus-Jurgen
Hey Richard
Martinez Genaro
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