We investigate theoretically the spatial dependence of the linear absorption spectra of single and coupledsemiconductor quantum dots, where the strong three-dimensional quantum confinement leads to an overallenhancement of Coulomb interaction and, in turn, to a pronounced renormalization of the excitonic properties.We show that—because of such Coulomb correlations and the spatial interference of the exciton wavefunctions—unexpected spectral features appear whose intensity depends on spatial resolution in a highlynonmonotonic way when the spatial resolution is comparable with the excitonic Bohr radius. We finallydiscuss how the optical near-field properties of double quantum dots are affected by their coupling.
Local absorption spectra of artificial atoms and molecules / Simserides, C.; Hohenester, U.; Goldoni, Guido; Molinari, Elisa. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - STAMPA. - 62(2000), pp. 13657-13666.
Data di pubblicazione: | 2000 |
Titolo: | Local absorption spectra of artificial atoms and molecules |
Autore/i: | Simserides, C.; Hohenester, U.; Goldoni, Guido; Molinari, Elisa |
Autore/i UNIMORE: | |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1103/PhysRevB.62.13657 |
Rivista: | |
Volume: | 62 |
Pagina iniziale: | 13657 |
Pagina finale: | 13666 |
Codice identificativo ISI: | WOS:000165556400052 |
Codice identificativo Scopus: | 2-s2.0-0034668573 |
Citazione: | Local absorption spectra of artificial atoms and molecules / Simserides, C.; Hohenester, U.; Goldoni, Guido; Molinari, Elisa. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - STAMPA. - 62(2000), pp. 13657-13666. |
Tipologia | Articolo su rivista |
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