Title :
Optical studies of symmetry and spin relaxation in II-VI self-assembled quantum dots
Author :
Hewaparakrama, K.P. ; Mackowski, S. ; Jackson, H.E. ; Smith, L.M. ; Dobrowolska, M. ; Furdyna, J.K. ; Karczewski, G.
Author_Institution :
Dept. of Phys., Cincinnati Univ., OH, USA
Abstract :
The excitonic structure in quantum dots is studied by polarization-resolved spectroscopy. For symmetric dots magneto-PL measurements show that the spin-relaxation time depends on the splitting of the exciton spin states. At magnetic field spin polarization is conserved within the timescale of exciton recombination.
Keywords :
II-VI semiconductors; cadmium compounds; electron relaxation time; electron spin polarisation; excitons; magneto-optical effects; photoluminescence; self-assembly; semiconductor quantum dots; CdSe; II-VI self-assembled quantum dots; exciton recombination; exciton spin states; excitonic structure; magnetic field spin polarization; magneto-photoluminescence measurements; polarization-resolved spectroscopy; spin relaxation; symmetric dots; Apertures; Excitons; Magnetic field measurement; Physics; Polarization; Quantum dot lasers; Quantum dots; Radiative recombination; Spectroscopy; US Department of Transportation;
Conference_Titel :
Quantum Electronics and Laser Science, 2003. QELS. Postconference Digest
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-749-0
DOI :
10.1109/QELS.2003.237809
