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

doi:10.1002/pssb.2221880143

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

Weizmann Institute of Science

Research output: Contribution to journal › Article › peer-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 language	English
Pages (from-to)	457-463
Number of pages	7
Journal	Physica Status Solidi (B): Basic Research
Volume	188
Issue number	1
DOIs	https://doi.org/10.1002/pssb.2221880143
State	Published - 1 Mar 1995
Externally published	Yes

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AU - Levinson, Y.

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AB - 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.

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

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