Tuning of the valence band mixing of excitons confined in GaAs/AlGaAs quantum dots via piezoelectric-induced anisotropic strain
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F13%3A00107017" target="_blank" >RIV/00216224:14310/13:00107017 - isvavai.cz</a>
Result on the web
<a href="https://journals.aps.org/prb/pdf/10.1103/PhysRevB.87.075311" target="_blank" >https://journals.aps.org/prb/pdf/10.1103/PhysRevB.87.075311</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.87.075311" target="_blank" >10.1103/PhysRevB.87.075311</a>
Alternative languages
Result language
angličtina
Original language name
Tuning of the valence band mixing of excitons confined in GaAs/AlGaAs quantum dots via piezoelectric-induced anisotropic strain
Original language description
This work presents an experimental method to tune the degree of heavy-hole (HH) and light-hole (LH) mixing of the ground state of quantum dots (QDs). A ferroelectric crystal is used to apply reversible anisotropic biaxial stress to thin nanomembranes, containing GaAs/AlGaAs QDs. The stress-induced modification of the QD anisotropy leads to a change of the relative intensity of the two emission lines produced by the recombination of neutral bright excitonic states. Such a change is ascribed to a variation of the degree of HH-LH mixing. At the same time the modified anisotropy produces a change of the excitonic fine structure splitting (FSS). Model calculations provide a qualitative insight into the relation between strain, HH-LH mixing, and the FSS in epitaxial GaAs/AlGaAs QDs.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10300 - Physical sciences
Result continuities
Project
<a href="/en/project/GA202%2F09%2F0676" target="_blank" >GA202/09/0676: Impact of capping layers on electronic states in quantum dots</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review B
ISSN
1098-0121
e-ISSN
2469-9969
Volume of the periodical
87
Issue of the periodical within the volume
7
Country of publishing house
US - UNITED STATES
Number of pages
5
Pages from-to
1-5
UT code for WoS article
000314874800015
EID of the result in the Scopus database
2-s2.0-84874535216