Nonlinear absorption of two-dimensional magnetoexcitons in As/As quantum wells
- 15 December 1991
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 44 (23) , 13093-13096
- https://doi.org/10.1103/physrevb.44.13093
Abstract
Applying a perpendicular magnetic field to a semiconductor quantum well results in a transition from a two-dimensional into a zero-dimensional system. The mutual interaction of the magnetoexciton levels is studied by populating the 1s magnetoexciton under steady-state conditions and measuring the related changes in absorption. We find redshifts of all energetically higher magnetoexcitons and a blueshift of the 1s exciton due to repulsive exciton-exciton interaction. The experimental results are compared with solutions of the semiconductor Bloch equations. Good qualitative agreement is found.Keywords
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