Laterally coupled circular quantum dots under applied electric field

The optical response of a system of two laterally coupled quantum dots with circular cross-sectional shape is investigated within the effective mass approximation, taking into account the effects of the change in the geometrical configuration, the application of an external static electric field, and the presence of a donor impurity center. The first-order dielectric susceptibility is calculated in order to derive the corresponding light absorption and relative refractive index coefficients. The possibility of tuning these optical properties by means of changes in the quantum dot symmetry and the electric field intensity is particularly discussed.

• Fecha de publicación: 2016
• Institución: Universidad de Medellín
• Repositorio: Repositorio UDEM
• Idioma: eng
• OAI Identifier: oai:repository.udem.edu.co:11407/2279
• Acceso en línea: http://hdl.handle.net/11407/2279
• Palabra clave: Electric fields; Electromagnetic wave absorption; Electronic states; Light absorption; Nanocrystals; Optical properties; Point defects; Quantum theory; Refractive index; Semiconductor quantum dots; Cross-sectional shape; Dielectric susceptibility; Effective mass approximation; Electric field intensities; Geometrical configurations; Optical response; Refractive index coefficient; Static electric fields; Electric field effects
• Rights: restrictedAccess
• License: http://purl.org/coar/access_right/c_16ec