2 research outputs found
Self‐assembled quantum dots of InSb grown on InP by atomic layer molecular beam epitaxy: Morphology and strain relaxation
Self-organized InSb dots grown by atomic layer molecular beam epitaxy on InP substrates have
been characterized by atomic force and transmission electron microscopy. Measurement of
high-energy electron diffraction during the growth indicates a Stransky–Krastanov growth mode
beyond the onset of 1.4 InSb monolayer ~ML! deposition. The dots obtained after a total deposition
of 5 and 7 ML of InSb present a truncated pyramidal morphology with rectangular base oriented
along the ^110& directions, elongated towards the @110# direction with 113%/111%A lateral facets in @11
¯
0# views, and ~001! flat top surfaces. The mismatch between
the dot and the substrate has been accommodated by a network of 90° misfit dislocation at the
interface. A corrugation of the InP substrate surrounding the dot has been also observedThis work has been funded by the Spanish CICYT
Project MAT95-0966.Peer reviewe
Self‐assembled quantum dots of InSb grown on InP by atomic layer molecular beam epitaxy: Morphology and strain relaxation
Self-organized InSb dots grown by atomic layer molecular beam epitaxy on InP substrates have
been characterized by atomic force and transmission electron microscopy. Measurement of
high-energy electron diffraction during the growth indicates a Stransky–Krastanov growth mode
beyond the onset of 1.4 InSb monolayer ~ML! deposition. The dots obtained after a total deposition
of 5 and 7 ML of InSb present a truncated pyramidal morphology with rectangular base oriented
along the ^110& directions, elongated towards the @110# direction with 113%/111%A lateral facets in @11
¯
0# views, and ~001! flat top surfaces. The mismatch between
the dot and the substrate has been accommodated by a network of 90° misfit dislocation at the
interface. A corrugation of the InP substrate surrounding the dot has been also observedThis work has been funded by the Spanish CICYT
Project MAT95-0966.Peer reviewe