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Laterally aligned quantum rings: From one-dimensional chains to two-dimensional arrays
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10.1063/1.4719519
/content/aip/journal/apl/100/20/10.1063/1.4719519
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/20/10.1063/1.4719519
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Sample structure of the ordered quantum rings and illustration of lateral alignment of quantum dots/rings by stacking quantum dots in multilayers.

Image of FIG. 2.
FIG. 2.

AFM images of quantum rings grown on GaAs (100), (311)B, and (511)B surfaces. The image scale is 2 μm × 2 μm from (100) surface and 1 μm × 1 μm for the other two surfaces. The bottom illustration shows transition from one-dimensional ordering on (100) surface to two-dimensional array on high index surfaces.

Image of FIG. 3.
FIG. 3.

Cross-sectional line-profiles of quantum rings grown on (a) GaAs (100) surface; (b) GaAs (311)B surface; and (c) GaAs (511)B surface. The line-profiles are taken along [01-1], [23-3], and [25-5] for (100), (311)B, and (511)B, respectively. The right side of the line-profiles is the AFM images of quantum rings grown on (100), (311)B, and (511)B surfaces. The insets are AFM images of a single quantum ring grown on each surface. The scale bars in the AFM images are 500 nm.

Image of FIG. 4.
FIG. 4.

AFM images of ordered quantum rings on the top of multilayered In0.4Ga0.6As quantum dot templates grown on (a) GaAs (100), (b) (311)B, and (c) (511)B surfaces. The second row images are fast Fourier transforms taken from the corresponding AFM images: (d) GaAs (100), (e) (311)B, and (f) (511)B surfaces. The insets are zoom-in AFM images showing different quantum ring lattice structures.

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/content/aip/journal/apl/100/20/10.1063/1.4719519
2012-05-17
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Laterally aligned quantum rings: From one-dimensional chains to two-dimensional arrays
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/20/10.1063/1.4719519
10.1063/1.4719519
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