Physical Review B, volume 81, issue 4, publication number 045301
Exciton spin dynamics in spherical CdS quantum dots
P. Horodyská
1
,
P. Němec
1
,
D. Sprinzl
1
,
P Malý
1
,
Petr Malý
1
,
V.N Gladilin
2
,
J. T. DEVREESE
2
Publication type: Journal Article
Publication date: 2010-01-06
Journal:
Physical Review B
Quartile SCImago
Q1
Quartile WOS
Q2
Impact factor: 3.7
ISSN: 24699950, 24699969, 10980121, 1550235X
Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Abstract
Exciton spin dynamics in quasispherical CdS quantum dots is studied in detail experimentally and theoretically. Exciton states are calculated using the six-band $\mathbf{k}\ensuremath{\cdot}\mathbf{p}$ Hamiltonian. It is shown that for various sets of Luttinger parameters, when the wurtzite lattice crystal-field splitting and Coulomb interaction between the electron-hole pair are taken into account exactly, both the electron and hole wave functions in the lowest exciton state are of $S$ type. This rules out the spatial-symmetry-induced origin of the dark exciton in CdS quantum dots. The exciton bleaching dynamics is studied using time- and polarization-resolved transient absorption technique of ultrafast laser spectroscopy. Several samples with a different mean size of CdS quantum dots in different glass matrices were investigated. This enabled the separation of effects that are typical for one particular sample from those that are general for this type of material. The experimentally determined dependence of the electron-spin-relaxation rate on the radius of quantum dots agrees well with that computed theoretically.
Top-30
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1 publication, 4.76%
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1 publication, 4.76%
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Citations by publishers
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5 publications, 23.81%
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4 publications, 19.05%
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3 publications, 14.29%
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2 publications, 9.52%
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1 publication, 4.76%
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1 publication, 4.76%
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Elsevier
1 publication, 4.76%
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1 publication, 4.76%
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- We do not take into account publications without a DOI.
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Horodyská P. et al. Exciton spin dynamics in spherical CdS quantum dots // Physical Review B. 2010. Vol. 81. No. 4. 045301
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Horodyská P., Němec P., Sprinzl D., Malý P., Malý P., Gladilin V., DEVREESE J. T. Exciton spin dynamics in spherical CdS quantum dots // Physical Review B. 2010. Vol. 81. No. 4. 045301
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TY - JOUR
DO - 10.1103/physrevb.81.045301
UR - https://doi.org/10.1103/physrevb.81.045301
TI - Exciton spin dynamics in spherical CdS quantum dots
T2 - Physical Review B
AU - Horodyská, P.
AU - Němec, P.
AU - Sprinzl, D.
AU - Malý, P
AU - Gladilin, V.N
AU - DEVREESE, J. T.
AU - Malý, Petr
PY - 2010
DA - 2010/01/06 00:00:00
PB - American Physical Society (APS)
IS - 4
VL - 81
SN - 2469-9950
SN - 2469-9969
SN - 1098-0121
SN - 1550-235X
ER -
Cite this
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@article{2010_Horodyská,
author = {P. Horodyská and P. Němec and D. Sprinzl and P Malý and V.N Gladilin and J. T. DEVREESE and Petr Malý},
title = {Exciton spin dynamics in spherical CdS quantum dots},
journal = {Physical Review B},
year = {2010},
volume = {81},
publisher = {American Physical Society (APS)},
month = {jan},
url = {https://doi.org/10.1103/physrevb.81.045301},
number = {4},
doi = {10.1103/physrevb.81.045301}
}