Electron and donor-impurity-related Raman scattering and Raman gain in triangular quantum dots under an applied electric field

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dc.authoridAkimov, Volodymyr -- 0000-0001-9014-3539; Tiutiunnyk, Anton -- 0000-0003-1692-5561en_US
dc.contributor.authorTiutiunnyk, Anton
dc.contributor.authorAkimov, Volodymyr
dc.contributor.authorTulupenko, Viktor
dc.contributor.authorMora-Ramos, Miguel E.
dc.contributor.authorKasapoglu, Esin
dc.contributor.authorMorales, Alvaro L.
dc.contributor.authorAlberto Duque, Carlos
dc.date.accessioned2019-07-27T12:10:23Z
dc.date.accessioned2019-07-28T09:45:38Z
dc.date.available2019-07-27T12:10:23Z
dc.date.available2019-07-28T09:45:38Z
dc.date.issued2016
dc.department[Tiutiunnyk, Anton -- Akimov, Volodymyr -- Tulupenko, Viktor -- Morales, Alvaro L. -- Alberto Duque, Carlos] Univ Antioquia UdeA, Fac Ciencias Exactas & Nat, Inst Fis, Grp Mat Condensada UdeA, Calle 70 52-21, Medellin, Colombia -- [Tiutiunnyk, Anton -- Akimov, Volodymyr -- Tulupenko, Viktor] Donbass State Engn Acad, Dept Phys, Shkadinova 72, UA-84313 Kramatorsk, Ukraine -- [Akimov, Volodymyr] Univ Medellin, Carrera 87 30-65, Medellin, Colombia -- [Mora-Ramos, Miguel E.] Univ Autonoma Estado Morelos, Inst Invest Ciencias Basicas & Aplicadas, Ctr Invest Ciencias, Ave Univ 1001, Cuernavaca 62209, Morelos, Mexico -- [Kasapoglu, Esin] Cumhuriyet Univ, Dept Phys, TR-58140 Sivas, Turkeyen_US
dc.description.abstractThe differential cross-section of electron Raman scattering and the Raman gain are calculated and analysed in the case of prismatic quantum dots with equilateral triangle base shape. The study takes into account their dependencies on the size of the triangle, the influence of externally applied electric field as well as the presence of an ionized donor center located at the triangle's orthocenter. The calculations are made within the effective mass and parabolic band approximations, with a diagonalization scheme being applied to obtain the eigenfunctions and eigenvalues of the x-y Hamiltonian. The incident and secondary (scattered) radiation have been considered linearly-polarized along the y-direction, coinciding with the direction of the applied electric field. For the case with an impurity center, Raman scattering with the intermediate state energy below the initial state one has been found to show maximum differential cross-section more than by an order of magnitude bigger than that resulting from the scheme with lower intermediate state energy. The Raman gain has maximum magnitude around 35 nm dot size and electric field of 40 kV/cm for the case without impurity and at maximum considered values of the input parameters for the case with impurity. Values of Raman gain of the order of up to 10(4) cm(-1) are predicted in both cases.en_US
dc.identifier.doi10.1140/epjb/e2016-70001-3en_US
dc.identifier.issn1434-6028
dc.identifier.issn1434-6036
dc.identifier.issue4en_US
dc.identifier.scopus2-s2.0-84963752749en_US
dc.identifier.scopusqualityQ3
dc.identifier.urihttps://dx.doi.org/10.1140/epjb/e2016-70001-3
dc.identifier.urihttps://hdl.handle.net/20.500.12418/7374
dc.identifier.volume89en_US
dc.identifier.wosWOS:000375219600003en_US
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherSPRINGERen_US
dc.relation.ispartofEUROPEAN PHYSICAL JOURNAL Ben_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.titleElectron and donor-impurity-related Raman scattering and Raman gain in triangular quantum dots under an applied electric fielden_US
dc.typeArticleen_US

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