Carrier-carrier scattering in quantum wells

K. Sun, T. Song, C. Sun, J. Wang

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

We have studied carrier dynamics in highly nonequilibrium two-dimensional (2D) carrier distributions generated with femtosecond laser pulses in p-doped (Formula presented) quantum wells at photoexcited carrier densities between (Formula presented) and (Formula presented) The initially nonthermal carrier distribution is quickly broadened due to inelastic carrier-carrier scattering, with the broadening rate increasing as carrier density is increased. Measurements of the unrelaxed peak height in the hot electron-neutral acceptor luminescence spectra are compared with calculations of the carrier distribution using integration of the 2D dynamically screened Boltzmann equation. Our results indicate that carrier-carrier scattering becomes as significant a scattering mechanism as LO-phonon emission at density of about (Formula presented).

Original languageEnglish
Pages (from-to)15592-15595
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume61
Issue number23
DOIs
StatePublished - 2000

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