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Research Article
Artur Tuktamyshev
University of Milano-Bicocca
Corresponding Author
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We investigated the nucleation of Ga droplets on exact GaAs(111)A substrates in the view of their use as the seeds for the self-assembly droplet epitaxial quantum dots. A small critical cluster size of 1-2 atoms characterizes the droplet nucleation. Low values of the Hopkins-Skellam index (as low as 0.35) demonstrate a high degree of a spatial order of the droplet ensemble. Around 350 °C the droplet size distribution becomes bimodal. We attribute this observation to the interplay between the local environment and the limitation to the adatom surface diffusion introduced by the Ehrlich-Schwöbel barrier at the terrace edges.
Keywords
self-assembled quantum dots (QDs), GaAs(111)A Substrates
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The full text of this article is available to read as a PDF.
No competing interests reported.
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View the published article at Scientific Reports.
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See the published version of this preprint at Scientific Reports.
This is a preprint, a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Learn more about In Review
Research Article
Artur Tuktamyshev
University of Milano-Bicocca
Corresponding Author
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
Peer Review Timeline
CURRENT STATUS: Published
View the published article at Scientific Reports.
Version 1
Posted 03 Feb, 2021
No community comments so far
Editorial decision: Major revision
On 19 Feb, 2021
Reviews received
Received 14 Feb, 2021
Reviewers agreed
On 05 Feb, 2021
Reviewers invited
Invitations sent on 05 Feb, 2021
Editor assigned
On 05 Feb, 2021
Editor invited
On 05 Feb, 2021
Submission checks complete
On 05 Feb, 2021
First submitted
On 03 Feb, 2021
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
License:
This work is licensed under a CC BY 4.0 License. Read Full License
View the published article at Scientific Reports.
We investigated the nucleation of Ga droplets on exact GaAs(111)A substrates in the view of their use as the seeds for the self-assembly droplet epitaxial quantum dots. A small critical cluster size of 1-2 atoms characterizes the droplet nucleation. Low values of the Hopkins-Skellam index (as low as 0.35) demonstrate a high degree of a spatial order of the droplet ensemble. Around 350 °C the droplet size distribution becomes bimodal. We attribute this observation to the interplay between the local environment and the limitation to the adatom surface diffusion introduced by the Ehrlich-Schwöbel barrier at the terrace edges.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
The full text of this article is available to read as a PDF.
No competing interests reported.
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