24 May 1999 Electron-phonon interactions in Alx Ga1-xAs: nonmonotonic dependence on the alloy composition
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Abstract
The electron-LO phonon interaction in AlxGa1-xAs has been studied, for the alloy composition ranging from 0.1 to 0.4, by picosecond Raman spectroscopy. We have found that the relative strength of the Frohlich interaction of the two LO phonon modes is a nonlinear function, and increases non- monotonically with the Al composition. The possible origins of these novel results are discussed in term of nonlinear dielectric theory and ordering in the alloy.
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Kong-Thon F. Tsen, David K. Ferry, A. Salvador, Hadis Morkoc, "Electron-phonon interactions in Alx Ga1-xAs: nonmonotonic dependence on the alloy composition", Proc. SPIE 3624, Ultrafast Phenomena in Semiconductors III, (24 May 1999); doi: 10.1117/12.349303; https://doi.org/10.1117/12.349303
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