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Quantum-confined Stark effect in interdiffused quantum dots
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10.1063/1.2358296
/content/aip/journal/apl/89/15/10.1063/1.2358296
http://aip.metastore.ingenta.com/content/aip/journal/apl/89/15/10.1063/1.2358296
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Figures

Image of FIG. 1.
FIG. 1.

(Color online) Field-dependent Stark shifts for the QDs with different In diffusion lengths ( indicates the as-grown structure). We assume that the electric field is along the growth direction, and the lens-shaped QDs are arranged in a tetragonal lattice, as shown in the inset (, , , and ).

Image of FIG. 2.
FIG. 2.

(Color online) (a) Dipole and polarizability of interdiffused lens-shaped QDs as a function of In diffusion length obtained from the quadratic fitting of field-dependent Stark shift profiles. The inset shows the ground-state transition energy as a function of In diffusion length when no electric field is applied. (b) The Stark shifts as a function of In diffusion length for different electric fields (, , and ). The solid line represents the positive field, the dashed line represents the negative field, and the unit is kV/cm.

Image of FIG. 3.
FIG. 3.

(Color online) Interdiffusion effect on the dipole and polarizability for the three types of isovolume QDs . The pyramidal QD has the aspect ratio .

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/content/aip/journal/apl/89/15/10.1063/1.2358296
2006-10-09
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Quantum-confined Stark effect in interdiffused quantum dots
http://aip.metastore.ingenta.com/content/aip/journal/apl/89/15/10.1063/1.2358296
10.1063/1.2358296
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