Four‐wave mixing in modulation‐doped GaAs quantum wells under strong magnetic fields

I. Bar‐Joseph*, G. Finkelstein, S. Bar‐Ad, H. Shtrikman, Y. Levinson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Time‐resolved four‐wave mixing is used to study electron scattering in modulation‐doped GaAs quantum wells in high magnetic fields up to 8T. A strong increase in dephasing times in strong magnetic fields is observed and attributed to a decrease in the scattering rates relative to zero field. An early time signal in high magnetic field is found, which is due to a polarization interaction process. A strong enhancement of the signal at the absorption edge is measured which is attributed to the Fermi edge singularity.

Original languageEnglish
Pages (from-to)457-463
Number of pages7
JournalPhysica Status Solidi (B): Basic Research
Volume188
Issue number1
DOIs
StatePublished - 1 Mar 1995
Externally publishedYes

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