Publication details

Elongation of InAs/GaAs quantum dots from magnetophotoluminescence measurements

Authors

KŘÁPEK Vlastimil KULDOVÁ Karla OSWALD Jiří HOSPODKOVÁ Alice HULICIUS Eduard HUMLÍČEK Josef

Year of publication 2006
Type Article in Periodical
Magazine / Source Applied Physics Letters
MU Faculty or unit

Faculty of Science

Citation
Field Solid matter physics and magnetism
Keywords SCANNING-TUNNELING-MICROSCOPY; SUBSTRATE ORIENTATION; ELECTRONIC-STRUCTURE; FINE-STRUCTURE; INGAAS/GAAS
Description The authors have used magnetophotoluminescence for the determination of the lateral anisotropy of buried quantum dots. While the calculated shifts of the energies of higher radiative transitions in magnetic field are found to be sensitive to the lateral elongation, the shift of the lowest transition is determined mainly by the exciton effective mass. This behavior can be used for a fairly reliable determination both the effective mass and the elongation from spectra containing at least two resolved bands.
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