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Electric-field-controlled electron relaxation in lateral double quantum dots embedded in a suspended slab
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10.1063/1.3009960
/content/aip/journal/jap/104/10/10.1063/1.3009960
http://aip.metastore.ingenta.com/content/aip/journal/jap/104/10/10.1063/1.3009960
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic view of a double QD embedded in a suspended semiconductor slab with a width of . The vertical width of the dot is and the interdot distance is . The double dot is located in the center of the slab. Here we simply illustrate the dots with blocks.

Image of FIG. 2.
FIG. 2.

Dispersion relations for (a) dilatational and (b) flexural waves with .

Image of FIG. 3.
FIG. 3.

Density of states (arbitrary units) as a function of energy for (a) dilatational and (b) flexural waves. The arrows are used to indicate the van Hove singularities.

Image of FIG. 4.
FIG. 4.

Relaxation rate as a function of electric field . The arrow indicates the enhanced relaxation rate. The inset shows a suppressed relaxation rate (arrow). The double dot is located in the center of the slab.

Image of FIG. 5.
FIG. 5.

Dependence of the specific electric field for the suppressed and enhanced rates on the width of the slab . The inset shows the energy difference in the presence of the electric field.

Image of FIG. 6.
FIG. 6.

Relaxation rate as a function of electric field for fixed position of the double QD . The arrows indicate two enhanced relaxation rates. The inset shows the ratio of the rates for dilatational waves and flexural waves .

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/content/aip/journal/jap/104/10/10.1063/1.3009960
2008-11-21
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Electric-field-controlled electron relaxation in lateral double quantum dots embedded in a suspended slab
http://aip.metastore.ingenta.com/content/aip/journal/jap/104/10/10.1063/1.3009960
10.1063/1.3009960
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