Calculation of electronic structure of a spherical quantum dot using a combination of quantum genetic algorithm and Hartree-Fock-Roothaan method

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dc.contributor.authorCakir, Bekir
dc.contributor.authorOezmen, Ayhan
dc.contributor.authorAtav, Uelfet
dc.contributor.authorYueksel, Hueseyin
dc.contributor.authorYakar, Yusuf
dc.date.accessioned2020-03-26T17:26:27Z
dc.date.available2020-03-26T17:26:27Z
dc.date.issued2008
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractThe electronic structure of Quantum Dot (QD), GaAs/AlxGa1-xAs, has been investigated by using a combination of Quantum Genetic Algorithm (QGA) and Hartree-Fock-Roothaan (HFR) method. One-electron system with an on-center impurity is considered by assuming a spherically symmetric confining potential of finite depth. The ground and excited state energies of one-electron QD were calculated depending on the dot radius and stoichiometric ratio. Expectation values of energy were determined by using the HFR method along with Slater-Type Orbitals (STOs) and QGA was used for the wave-functions optimization. In addition, the effect of the size of the basis set on the energy of QD was investigated. We also calculated the binding energy for a dot with finite confining potential. We found that the impurity binding energy increases for the finite potential well when the dot radius decreases. For the finite potential well, the binding energy reaches a peak value and then diminishes to a limiting value corresponding to the radius for which there are no bound states in the well. Whereas in previous study, in Ref. 40, for the infinite potential well, we found that the impurity binding energy increases as the dot radius decreases.en_US
dc.identifier.doi10.1142/S0129183108012315en_US
dc.identifier.endpage609en_US
dc.identifier.issn0129-1831en_US
dc.identifier.issn1793-6586en_US
dc.identifier.issue4en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage599en_US
dc.identifier.urihttps://dx.doi.org/10.1142/S0129183108012315
dc.identifier.urihttps://hdl.handle.net/20.500.12395/22231
dc.identifier.volume19en_US
dc.identifier.wosWOS:000257761200005en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherWORLD SCIENTIFIC PUBL CO PTE LTDen_US
dc.relation.ispartofINTERNATIONAL JOURNAL OF MODERN PHYSICS Cen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectelectronic structure of spherical quantum doten_US
dc.subjectquantum genetic algorithmen_US
dc.subjecthydrogenlike impurityen_US
dc.subjectHartree-Fock Roothaan methoden_US
dc.subjectslater-type orbitalen_US
dc.titleCalculation of electronic structure of a spherical quantum dot using a combination of quantum genetic algorithm and Hartree-Fock-Roothaan methoden_US
dc.typeArticleen_US

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