Polarization of the photoluminescence of quantum dots incorporated into quantum wires
- Authors: Platonov A.V.1, Kochereshko V.P.1,2, Kats V.N.1, Cirlin G.E.1, Bouravleuv A.D.1, Avdoshina D.V.1, Delga A.3, Besombes L.3, Mariette H.3
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Affiliations:
- Ioffe Physical–Technical Institute
- St. Petersburg State University
- CEA-CNRS group “Nanophysique et Semiconducteurs”
- Issue: Vol 50, No 12 (2016)
- Pages: 1647-1650
- Section: XX International Symposium “Nanophysics and Nanoelectronics”, Nizhny Novgorod, March 14–18, 2016
- URL: https://journals.rcsi.science/1063-7826/article/view/198974
- DOI: https://doi.org/10.1134/S1063782616120150
- ID: 198974
Cite item
Abstract
The photoluminescence spectra of individual quantum dots incorporated into a quantum wire are studied. From the behavior of the spectra in a magnetic field, it is possible to estimate the exciton binding energy in a quantum dot incorporated into a quantum wire. It is found that the exciton photoluminescence signal emitted from a quantum dot along the direction of the nanowire axis is linearly polarized. At the same time, the photoluminescence signal propagating in the direction orthogonal to the nanowire axis is practically unpolarized. The experimentally observed effect is attributed to the nonaxial arrangement of the dot in the wire under conditions of a huge increase in the exciton binding energy due to the effect of the image potential on the exciton.
About the authors
A. V. Platonov
Ioffe Physical–Technical Institute
Author for correspondence.
Email: alexei.platonov@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
V. P. Kochereshko
Ioffe Physical–Technical Institute; St. Petersburg State University
Email: alexei.platonov@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021; St. Petersburg, 199034
V. N. Kats
Ioffe Physical–Technical Institute
Email: alexei.platonov@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
G. E. Cirlin
Ioffe Physical–Technical Institute
Email: alexei.platonov@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
A. D. Bouravleuv
Ioffe Physical–Technical Institute
Email: alexei.platonov@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
D. V. Avdoshina
Ioffe Physical–Technical Institute
Email: alexei.platonov@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
A. Delga
CEA-CNRS group “Nanophysique et Semiconducteurs”
Email: alexei.platonov@mail.ioffe.ru
France, Grenoble, F-38054
L. Besombes
CEA-CNRS group “Nanophysique et Semiconducteurs”
Email: alexei.platonov@mail.ioffe.ru
France, Grenoble, F-38054
H. Mariette
CEA-CNRS group “Nanophysique et Semiconducteurs”
Email: alexei.platonov@mail.ioffe.ru
France, Grenoble, F-38054