title: Measurement of electron-hole friction in an n-doped GaAs/AlGaAs quantum well using optical transient grating spectroscopy.
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.
authors.affiliation: Department of Physics, University of California, Berkeley, California 94720, USA.
authors.forename: Luyi
authors.initials: L
authors.lastname: Yang
authors.forename: J D
authors.initials: JD
authors.lastname: Koralek
authors.forename: J
authors.initials: J
authors.lastname: Orenstein
authors.forename: D R
authors.initials: DR
authors.lastname: Tibbetts
authors.forename: J L
authors.initials: JL
authors.lastname: Reno
authors.forename: M P
authors.initials: MP
authors.lastname: Lilly