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Atomic structure of Ge quantum dots on the Si(001) surface

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Abstract

In situ morphological investigation of the “105” faceted Ge islands on the Si(001) surface (hut clusters) have been carried out using an ultra high vacuum instrument integrating a high resolution scanning tunnelling microscope and a molecular beam epitaxy vessel. Both species of hut clusters-pyramids and wedges-were found to have the same structure of the “105” facets which was visualized. Structures of vertexes of the pyramidal clusters and ridges of the wedge-shaped clusters were revealed as well and found to be different. This allowed us to propose a crystallographic model of the “105” facets as well as models of the atomic structure of both species of the hut clusters. An inference is made that transitions between the cluster shapes are impossible.

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Authors and Affiliations

  1. Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow, 119991, Russia

    L. V. Arapkina & V. A. Yuryev

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  1. L. V. Arapkina
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  2. V. A. Yuryev
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Correspondence to L. V. Arapkina.

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Arapkina, L.V., Yuryev, V.A. Atomic structure of Ge quantum dots on the Si(001) surface. Jetp Lett. 91, 281–285 (2010). https://doi.org/10.1134/S0021364010060056

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  • DOI: https://doi.org/10.1134/S0021364010060056

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