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Schematic diagram of a CQD containing a single magnetic ion.
The exciton energy spectrum as a function of electric field (the upper panel) and the electro-PL spectrum (the lower panel) in CQD. , the radius , and the distance between the two QDs .
The same as Fig. 2 but for the CQD with larger spatial separation between the two QDs, .
(a) The schematic diagram of the four-level model. (b) The hole energy as a function of distance between the two QDs. The solid lines denote the hole energies in CQDs with the HH-LH coupling; the dotted lines denote that without the HH-LH coupling. (c) The overlap factor between the electron ground state and the hole ground states (the solid lines) and first-excited hole states (the dotted lines) as a function of the distance between the two QDs (the black lines) and the electric fields (the red lines) for .
The contour plot of the spin splitting of exciton in a CQD as a function of the distances and external electric fields.
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