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Microscopic dielectric response functions in semiconductor quantum dots
Cartoixà Soler, Xavier (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica)
Wang, L. -W. (Lawrence Berkeley National Laboratory. Computational Research Division)
American Physical Society

Data: 2005
Resum: We calculate and model the microscopic dielectric response function for quantum dots using first principle methods. We find that the response is bulklike inside the quantum dots, and the reduction of the macroscopic dielectric constants is a surface effect. We present a model for the microscopic dielectric function which reproduces well the directly calculated results and can be used to solve the Poisson equation in a nanosystem.
Drets: Tots els drets reservats.
Llengua: Anglès
Document: Article ; Versió publicada
Publicat a: Physical review letters, Vol. 94, Issue 23 (June 2005) , p. 236804, ISSN 1079-7114

DOI: 10.1103/PhysRevLett.94.236804

4 p, 2.1 MB

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