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- W1991034713 abstract "We calculate the electronic structures and binding energy of a hydrogenic impurity in a hierarchically self-assembled GaAs∕AlxGa1−xAs quantum dot (QD) in the framework of effective-mass envelope-function theory. The variation of the electronic structures and binding energy with the QD structure parameters and the position of the impurity are studied in detail. We find that (1) acceptor impurity energy levels depend more sensitively on the size of the QD than those of a donor impurity; (2) all impurity energy levels strongly depend on the GaAs quantum well (QW) width; (3) a donor impurity in the QD has only one binding energy level except when the GaAs QW is large; (4) an acceptor impurity in the QD has two binding energy levels, which correspond to heavy- and light-hole quantum states; (5) the binding energy has a maximum value when the impurity is located below the symmetry axis along the growth direction; and (6) the binding energy has a minimum value when the impurity is located at the top corner of the QD." @default.
- W1991034713 created "2016-06-24" @default.
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- W1991034713 date "2006-10-15" @default.
- W1991034713 modified "2023-10-16" @default.
- W1991034713 title "Electronic structure and binding energy of a hydrogenic impurity in a hierarchically self-assembled GaAs∕AlxGa1−xAs quantum dot" @default.
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- W1991034713 doi "https://doi.org/10.1063/1.2358406" @default.
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