Scattering in monolayer Molybdenum disulfide quantum dot

We investigate the propagation of electrons in a circular quantum dot of monolayer Molybdenium disulfide MoS2, subjected to an electric potential. Using the continuum model, we present analytical expressions for the eigenstates, scattering coefficients, scattering efficiency, and radial component of...

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Veröffentlicht in:Physica. E, Low-dimensional systems & nanostructures Low-dimensional systems & nanostructures, 2022-04, Vol.138, p.115100, Article 115100
Hauptverfasser: Belouad, Abdelhadi, Kamal, Abdellatif, Houça, Rachid, Choubabi, El Bouâzzaoui, El Bouziani, Mohammed
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Sprache:eng
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Zusammenfassung:We investigate the propagation of electrons in a circular quantum dot of monolayer Molybdenium disulfide MoS2, subjected to an electric potential. Using the continuum model, we present analytical expressions for the eigenstates, scattering coefficients, scattering efficiency, and radial component of the reflected current and electron density. We identify two scattering regimes as a function of physical parameters such as incident electronic energy, potential barrier, and quantum dot radius. For the incident electron low energy, we show that there is an appearance of scattering resonances. Also, we note that the Far-field scattered current has distinct preferred scattering directions. •Identification of two diffusion regimes according to the parameters of the system.•Appearance of scattering resonances for the incident electron low energy.•The Far-field scattered current has distinct preferred scattering directions.
ISSN:1386-9477
1873-1759
DOI:10.1016/j.physe.2021.115100