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Data for Multiple radial phosphorus segregations in GaAsP core-shell nanowires
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Fonseka, H. Aruni , Zhang, Yunyan, Gott, James A., Beanland, Richard, Liu, Huiyun and Sánchez, Ana M. (2020) Data for Multiple radial phosphorus segregations in GaAsP core-shell nanowires. [Dataset]
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Abstract
Highly faceted geometries such as nanowires are prone to form self-formed features, especially those that are driven by segregation. Understanding these features is important in preventing their formation, understanding their effects on nanowire properties, or engineering them for applications. Single elemental segregation lines that run along the radii of the hexagonal cross-section have been a common observation in alloy semiconductor nanowires. Here, in GaAsP nanowires, two additional P rich bands are formed on either side of the primary band, resulting in a total of three segregation bands in the vicinity of three of the alternating radii. These bands are less intense than the primary band and their formation can be attributed to the inclined nanofacets that form in the vicinity of the vertices. The formation of the secondary bands requires a higher composition of P in the shell, and to be grown under conditions that increase the diffusivity difference between As and P. Furthermore, it is observed that the primary band can split into two narrow and parallel bands. This can take place in all six radii, making the cross sections to have up to a maximum of 18 radial segregation bands. With controlled growth, these features could be exploited to assemble 2 multiple different quantum structures in a new dimension (circumferential direction) within nanowires.
| Item Type: | Dataset | |||||||||
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| Subjects: | Q Science > QC Physics | |||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | |||||||||
| Type of Data: | Experimental data | |||||||||
| Library of Congress Subject Headings (LCSH): | Condensed matter, Nanowires, Nanostructured materials, Semiconductors, Gallium alloys | |||||||||
| Publisher: | University of Warwick, Department of Physics | |||||||||
| Official Date: | 19 August 2020 | |||||||||
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| Status: | Not Peer Reviewed | |||||||||
| Publication Status: | Published | |||||||||
| Media of Output (format): | .dm4 | |||||||||
| Access rights to Published version: | Open Access (Creative Commons) | |||||||||
| Copyright Holders: | University of Warwick | |||||||||
| Description: | Data record consists of a zip archive containing the raw data files. Raw data is in .dm4 format and named according to the figure in the corresponding article. Further information can be found in the supplementary information accompanying the article. |
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| Date of first compliant deposit: | 16 November 2020 | |||||||||
| Date of first compliant Open Access: | 16 November 2020 | |||||||||
| RIOXX Funder/Project Grant: |
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