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arXiv · 1103.5800

Measurement of electron-hole friction in an n-doped GaAs/AlGaAs quantum well using optical transient grating spectroscopy

Luyi Yang·J. D. Koralek·J. Orenstein·D. R. Tibbetts·J. L. Reno·M. P. Lilly
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Abstract

We use phase-resolved transient grating spectroscopy to measure the drift and diffusion of electron-hole density waves in a semiconductor quantum well. The unique aspects of this optical probe allow us to determine the frictional force between a two-dimensional Fermi liquid of electrons and a dilute gas of holes. Knowledge of electron-hole friction enables prediction of ambipolar dynamics in high-mobility electron systems.

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Luyi Yang, J. D. Koralek, J. Orenstein, D. R. Tibbetts, J. L. Reno, M. P. Lilly. 2011-05-26. Measurement of electron-hole friction in an n-doped GaAs/AlGaAs quantum well using optical transient grating spectroscopy. https://doi.org/10.1103/physrevlett.106.247401

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