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Strain-controlled correlation effects in self-assembled quantum dot stacks
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10.1063/1.2354476
/content/aip/journal/apl/89/15/10.1063/1.2354476
http://aip.metastore.ingenta.com/content/aip/journal/apl/89/15/10.1063/1.2354476
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Schematic representation of the dependence of the surface elastic energy upon the spacer thickness. The cross sections of samples with different spacer thickness (a)–(c) are combined into a single cross section (d).

Image of FIG. 2.
FIG. 2.

(Color online) Elastic strain field of one single pointlike inclusion (a) and a periodic array of point defects [(b)–(d)] in a GaAs matrix. (a) and (c) show the minima (black) and maxima (white) of the elastic energy per unit area in the [110] direction of the relaxed surface vs spacer thickness . (c) shows additionally in color coding. The density plot (b) depicts in the [001]-[010] surface plane at . (d) for and . The positions of the QDs are indicated by triangles [(a),(c), and (d)] and by boxes (b), respectively. All lengths are in units of the lattice constant of the parent material (monolayer width).

Image of FIG. 3.
FIG. 3.

(Color online) Elastic strain field of a periodic array of pyramids in a GaAs matrix. (a) Density plot of the elastic energy per unit area in the [001]-[010] surface plane at (inset: 3D view). (b) Minima (black), maxima (white), and absolute values (color coded) of in the [110] direction of the relaxed surface vs spacer thickness . (c) for and . The positions and sizes of the QDs are indicated by boxes (a) and dotted triangles [(b) and (c)].

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/content/aip/journal/apl/89/15/10.1063/1.2354476
2006-10-09
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Strain-controlled correlation effects in self-assembled quantum dot stacks
http://aip.metastore.ingenta.com/content/aip/journal/apl/89/15/10.1063/1.2354476
10.1063/1.2354476
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