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Energy relaxation of an excited electron gas in quantum wires: many-body electron LO-phonon coupling

Lian Zheng·S. Das Sarma
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Abstract

We theoretically study energy relaxation via LO-phonon emission in an excited one-dimensional electron gas confined in a GaAs quantum wire structure. We find that the inclusion of phonon renormalization effects in the theory extends the LO-phonon dominated loss regime down to substantially lower temperatures. We show that a simple plasmon-pole approximation works well for this problem, and discuss implications of our results for low temperature electron heating experiments in quantum wires.

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Lian Zheng, S. Das Sarma. 1996-02-08. Energy relaxation of an excited electron gas in quantum wires: many-body electron LO-phonon coupling. https://doi.org/10.1103/physrevb.54.2751

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