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RESEARCH PRODUCT
Lateral induced dipole moment and polarizability of excitons in a ZnO single quantum disk
A. OukerroumE. AssaidJuan P. Martínez-pastorEl Mustapha FeddiFrancis DujardinJ. Bosch Bailachsubject
PhysicsCondensed matter physicsCondensed Matter::OtherExcitonQuantum-confined Stark effectGeneral Physics and AstronomyCondensed Matter::Mesoscopic Systems and Quantum Hall EffectCondensed Matter::Materials Sciencesymbols.namesakeDipoleStark effectPolarizabilityQuantum dotsymbolsPhysics::Atomic PhysicsBohr radiusBiexcitondescription
The lateral Stark shift of an exciton confined in a single ZnO quantum thin disk of radius R was calculated using a variational approach within the two bands effective mass approximation. It is shown that the exciton has a non negligible induced dipole moment when an external electric field is applied mainly for electron-hole separation below to the 3D excitonic Bohr radius. The behavior of the exciton lateral Stark shift proves the existence of an important correlation between the polarizability and the induced dipole moment.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-02-14 | Journal of Applied Physics |