Binding energies and optical absorption of donor impurities in spherical quantum dot under applied magnetic field

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dc.authoridDuque, Carlos/0000-0003-3382-2783
dc.authoridAL, Emre Bahadir/0000-0003-4435-2879
dc.contributor.authorAl, E. B.
dc.contributor.authorKasapoglu, E.
dc.contributor.authorSakiroglu, S.
dc.contributor.authorSari, H.
dc.contributor.authorSokmen, I
dc.contributor.authorDuque, C. A.
dc.date.accessioned2024-10-26T18:09:06Z
dc.date.available2024-10-26T18:09:06Z
dc.date.issued2020
dc.departmentSivas Cumhuriyet Üniversitesi
dc.description.abstractIn this study, we have calculated the binding energies of the ground-ls and first few excited impurity states such as 2s, 1p, 2p, ld, and 2d, as well as the wave functions and energies of an electron in spherical quantum dot which has finite confinement potential under applied magnetic field. Furthermore, we calculated the impurity related optical absorption coefficients for 1s -> 1p, 1p -> 2s, 2s -> 2p, 1p -> 1d, and 2p -> 2d transitions between higher impurity states than those available in the literature. The calculations have been made in the framework of the effective mass approximation via the diagonalization method by using the complete basis of functions obtained as the exact solutions of the infinite QD in the absence of the magnetic field. Considering the two-level approach, the optical response was treated in the density matrix expansion. The results show that the external magnetic field strongly affects the impurity binding energies in large dot radii and the optical absorption coefficients. Furthermore, it has been observed that the change of dot radius has a significant effect on the optical absorption coefficients.
dc.description.sponsorshipScientific Research Project Fund of Sivas Cumhuriyet University [F-528]; El Patrimonio Autonomo Fondo Nacional de Financiamiento para la Ciencia, la Tecnologia y la Innovacion Francisco Jose de Caldas [CD 111580863338, CT FP80740-173-2019]
dc.description.sponsorshipThis research is produced from Emre Bahadir Al's PhD thesis at Sivas Cumhuriyet University, Institute of Science, Department of Physics. The authors are grateful to The Scientific Research Project Fund of Sivas Cumhuriyet University under the project number F-528. C. A. Duque is grateful to the Colombian Agencies: CODI-Universidad de Antioquia (Estrategia de Sostenibilidad de la Universidad de Antioquia and projects Propiedades magneto-.opticas y.optica no lineal en superredes de Grafeno and Estudio de propiedades.opticas en sistemas semiconductores de dimensiones nanosc.opicas), and Facultad de Ciencias Exactas y Naturales-Universidad de Antioquia (CAD exclusive dedication project 2019-2020). C. A. Duque also acknowledges the financial support from El Patrimonio Autonomo Fondo Nacional de Financiamiento para la Ciencia, la Tecnologia y la Innovacion Francisco Jose de Caldas (project: CD 111580863338, CT FP80740-173-2019).
dc.identifier.doi10.1016/j.physe.2020.114011
dc.identifier.issn1386-9477
dc.identifier.issn1873-1759
dc.identifier.scopus2-s2.0-85079237384
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1016/j.physe.2020.114011
dc.identifier.urihttps://hdl.handle.net/20.500.12418/29958
dc.identifier.volume119
dc.identifier.wosWOS:000520015900004
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofPhysica E-Low-Dimensional Systems & Nanostructures
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectSpherical quantum dot
dc.subjectMagnetic field
dc.subjectImpurity binding energy
dc.subjectOptical absorption coefficient
dc.titleBinding energies and optical absorption of donor impurities in spherical quantum dot under applied magnetic field
dc.typeArticle

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