Theoretical study of electronic and optical properties in doped quantum structures with Razavy confining potential: effects of external fields

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dc.authoridRestrepo Arango, Ricardo Leon/0000-0002-0359-353X
dc.authoridGil-Corrales, John A./0000-0001-8666-688X
dc.authoriddakhlaoui, hassen/0000-0002-6551-6628
dc.contributor.authorDakhlaoui, Hassen
dc.contributor.authorGil-Corrales, J. A.
dc.contributor.authorMorales, A. L.
dc.contributor.authorKasapoglu, E.
dc.contributor.authorRadu, A.
dc.contributor.authorRestrepo, R. L.
dc.contributor.authorTulupenko, V
dc.date.accessioned2024-10-26T18:11:10Z
dc.date.available2024-10-26T18:11:10Z
dc.date.issued2022
dc.departmentSivas Cumhuriyet Üniversitesi
dc.description.abstractWe investigate the energy states of confined electrons in doped quantum structures with Razavy-like confining potentials. The theoretical investigation is performed within the effective mass and parabolic band approximations, including the influence of externally applied electric and magnetic fields. First, we analyze the case of a Razavy quantum well and determine its conduction subband spectrum, focusing on the lowest energy levels and their probability densities. These properties have been numerically determined by self-consistently solving the coupled system of Schrodinger, Poisson, and charge neutrality equations. Doping is introduced via an on-center delta-like layer. In order to evaluate the associated total (linear plus nonlinear) optical absorption coefficient (TOAC), we have calculated the corresponding diagonal and off-diagonal electric dipole matrix elements, the main energy separation, and the occupancy ratio which are the main factors governing the variation in this optical response. A detailed discussion is given about the influence of doping concentration as well as electric and magnetic fields, which can produce shifts in the light absorption signal, toward either lower or higher frequencies. As an extension of the self-consistent method to a two-dimensional problem, the energy states of quantum wire system of circular cross section, with internal doping and Razavy potential, have been calculated. The response of eigenvalues, self-consistent potentials and electron densities is studied with the variation in delta-doping layer width and of the donor density. Finally, the origin of Friedel-like oscillations, that arise in the density profile, generated by the occupation of internal and surface electronic states has been explained.
dc.description.sponsorshipEl Patrimonio Autonomo Fondo Nacional de Financiamiento para la Ciencia, la Tecnologia y la Innovacion Francisco Jose de Caldas [CD 111580863338, CT FP80740-173-2019]; University of Antioquia; Mexican Conacyt [A1-S-8218]
dc.description.sponsorshipCAD 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, Estudio de propiedades opticas en sistemas semiconductores de dimensiones nanoscopicas, and Propiedades de transporte, espintronicas y termicas en el sistema molecular ZincPorfirina), and Facultad de Ciencias Exactas y Naturales-Universidad de Antioquia (CAD exclusive dedication project 2021-2022). CAD 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). JAGC acknowledges the financial support from University of Antioquia Doctoral Scholarship in December 2020, to the doctoral program, and to the postgraduate management of the University of Antioquia. MEMR acknowledges Mexican Conacyt for support through Grant A1-S-8218.
dc.identifier.doi10.1007/s10825-022-01859-z
dc.identifier.endpage395
dc.identifier.issn1569-8025
dc.identifier.issn1572-8137
dc.identifier.issue2
dc.identifier.scopus2-s2.0-85125693016
dc.identifier.scopusqualityQ3
dc.identifier.startpage378
dc.identifier.urihttps://doi.org/10.1007/s10825-022-01859-z
dc.identifier.urihttps://hdl.handle.net/20.500.12418/30552
dc.identifier.volume21
dc.identifier.wosWOS:000765683300001
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofJournal of Computational Electronics
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectRazavy potential
dc.subjectQuantum well and quantum wire
dc.subjectSelf consistent calculation
dc.titleTheoretical study of electronic and optical properties in doped quantum structures with Razavy confining potential: effects of external fields
dc.typeArticle

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