From spatially indirect excitons to momentum-space indirect excitons by anin-plane magnetic field

Authors
Butov, LV Mintsev, AV Lozovik, YE Campman, KL Gossard, AC
Citation
Lv. Butov et al., From spatially indirect excitons to momentum-space indirect excitons by anin-plane magnetic field, PHYS REV B, 62(3), 2000, pp. 1548-1551
Citations number
26
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
01631829 → ACNP
Volume
62
Issue
3
Year of publication
2000
Pages
1548 - 1551
Database
ISI
SICI code
0163-1829(20000715)62:3<1548:FSIETM>2.0.ZU;2-X
Abstract
An in-plane magnetic field is found to change drastically the photoluminesc ence spectra and kinetics of interwell excitons in GaAs/AlxGa1-xAs coupled quantum wells. This effect is clue to the in-plane magnetic-field-induced d isplacement of the interwell exciton dispersion in momentum space, which re sults in the transition from the momentum-space direct exciton ground state to the momentum-space indirect exciton ground state. An in-plane magnetic field is, therefore, an effective tool for exciton dispersion engineering.