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 language | English |
---|---|
Pages (from-to) | 457-463 |
Number of pages | 7 |
Journal | Physica Status Solidi (B): Basic Research |
Volume | 188 |
Issue number | 1 |
DOIs | |
State | Published - 1 Mar 1995 |
Externally published | Yes |