From spatially indirect to momentum-space indirect exciton by in-plane magnetic field

Details From spatially indirect to momentum-space indirect exciton by in-plane magnetic field From spatially indirect to momentum-space indirect exciton by in-plane magnetic field

1999-12-14

arxiv.org/abs/cond-mat/9912242v1

Phys. Rev. B 62, 1548 (2000)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevB.62.1548

In-plane magnetic field is found to change drastically the photoluminescence spectra and kinetics of interwell excitons in GaAs/AlGaAs coupled quantum wells. The effect is due to the in-plane magnetic field induced displacement of the interwell exciton dispersion in a momentum space, which results in the transition from the momentum-space direct exciton ground state to the momentum-space indirect exciton ground state. In-plane magnetic field is, therefore, an effective tool for the exciton dispersion engineering.

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