Microscopic dielectric response functions in semiconductor quantum dots.
نویسندگان
چکیده
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.
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ورودعنوان ژورنال:
- Physical review letters
دوره 94 23 شماره
صفحات -
تاریخ انتشار 2005