Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2006-09-14
Physical Review B 75 033317 (2007)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
18 pages, 4 figures
Scientific paper
10.1103/PhysRevB.75.033317
We report a giant electric field induced increase of spin orientation of excitons in n-type GaAs/AlGaAs quantum well. It correlates strongly with the formation of negatively charged excitons (trions) in the photoluminescence spectra. Under resonant excitation of neutral heavy-hole excitons, the polarization of excitons and trions increases dramatically with electrical injection of electrons within the narrow exciton-trion bias transition in the PL spectra, implying a polarization sensitivity of 200 % per Volt. This effect results from a very efficient trapping of neutral excitons by the quantum well interfacial fluctuations (so-called "natural" quantum dots) containing resident electrons.
Bracker Allan S.
Dzhioev R. I.
Gammon Dan
Korenev Vladimir L.
Lazarev M. V.
No associations
LandOfFree
Electrical control of optical orientation of neutral and negatively charged excitons in n-type semiconductor quantum well does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Electrical control of optical orientation of neutral and negatively charged excitons in n-type semiconductor quantum well, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrical control of optical orientation of neutral and negatively charged excitons in n-type semiconductor quantum well will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-537383