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

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

1996-02-08

arxiv.org/abs/cond-mat/9602051v1

Physics

Condensed Matter

10 pages, RevTex, 4 figures included. Also available at http://www-cmg.physics.umd.edu/~lzheng/

Scientific paper

10.1103/PhysRevB.54.2751

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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