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Self-formed quantum wires and dots in GaAsP–GaAsP core–shell nanowires
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Fonseka, H. A., Velichko, Anton V., Zhang, Yunyan, Gott, James A., Davis, George D., Beanland, R., Liu, Huiyun, Mowbray, David J. and Sánchez, Ana M. (2019) Self-formed quantum wires and dots in GaAsP–GaAsP core–shell nanowires. Nano Letters, 19 (6). pp. 4158-4165. doi:10.1021/acs.nanolett.9b01673
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WRAP-self-formed-quantum-wires-dots-GaAsP–GaAsP-core–shell-nanowires-Sánchez-2019.pdf - Accepted Version Embargoed item. Restricted access to Repository staff only - Requires a PDF viewer. Download (908Kb) |
Official URL: http://dx.doi.org/10.1021/acs.nanolett.9b01673
Abstract
Quantum structures designed using nanowires as a basis are excellent candidates to achieve novel design architectures. Here, triplets of quantum wires (QWRs) that form at the core–shell interface of GaAsP–GaAsP nanowires are reported. Their formation, on only three of the six vertices of the hexagonal nanowire, is governed by the three-fold symmetry of the cubic crystal on the (111) plane. In twinned nanowires, the QWRs are segmented, to alternating vertices, forming quantum dots (QDs). Simulations confirm the possibility of QWR and QD-like behavior from the respective regions. Optical measurements confirm the presence of two different types of quantum emitters in the twinned individual nanowires. The possibility to control the relative formation of QWRs or QDs, and resulting emission wavelengths of the QDs, by controlling the twinning of the nanowire core, opens up new possibilities for designing nanowire devices.
| Item Type: | Journal Article | ||||||||||||
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| Subjects: | Q Science > QC Physics T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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| Divisions: | Faculty of Science > Physics | ||||||||||||
| Library of Congress Subject Headings (LCSH): | Nanowires, Optical measurements | ||||||||||||
| Journal or Publication Title: | Nano Letters | ||||||||||||
| Publisher: | American Chemical Society | ||||||||||||
| ISSN: | 1530-6984 | ||||||||||||
| Official Date: | 29 May 2019 | ||||||||||||
| Dates: |
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| Volume: | 19 | ||||||||||||
| Number: | 6 | ||||||||||||
| Page Range: | pp. 4158-4165 | ||||||||||||
| DOI: | 10.1021/acs.nanolett.9b01673 | ||||||||||||
| Status: | Peer Reviewed | ||||||||||||
| Publication Status: | Published | ||||||||||||
| Publisher Statement: | This document is the Accepted Manuscript version of a Published Work that appeared in final form in Nano Letters, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://dx.doi.org/10.1021/acs.nanolett.9b01673 | ||||||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||||||
| RIOXX Funder/Project Grant: |
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