Coulomb interaction signatures in self-assembled lateral quantum dot molecules
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Altres documents de l'autoria: Zhou, Xinran R.; Lee, Jihoon H.; Salamo, Gregory J.; Royo, Miquel; Climente, Juan I.; Doty, Matthew F.
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comunitat-uji-handle3:10234/8638
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Coulomb interaction signatures in self-assembled lateral quantum dot moleculesAutoria
Data de publicació
2013Editor
American Physical SocietyISSN
1098-0121; 1550-235XTipus de document
info:eu-repo/semantics/articleVersió de l'editorial
http://journals.aps.org/prb/pdf/10.1103/PhysRevB.87.125309Versió
info:eu-repo/semantics/publishedVersionParaules clau / Matèries
Resum
We use photoluminescence spectroscopy to investigate the ground state of single self-assembled InGaAs lateral
quantum dot molecules. We apply a voltage along the growth direction that allows us to control the total ... [+]
We use photoluminescence spectroscopy to investigate the ground state of single self-assembled InGaAs lateral
quantum dot molecules. We apply a voltage along the growth direction that allows us to control the total charge
occupancy of the quantum dot molecule. Using a combination of computational modeling and experimental
analysis, we assign the observed discrete spectral lines to specific charge distributions. We explain the dynamic
processes that lead to these charge configurations through electrical injection and optical generation. Our systemic
analysis provides evidence of interdot tunneling of electrons as predicted in previous theoretical work. [-]
Publicat a
Physical Review B, Volume 87, Issue 12, 15 March 2013, Article number 125309Drets d'accés
©2013 American Physical Society
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