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Fractional Charge States in the Magneto-Photoluminescence Spectra of Single-Electron InP/GaInP(2) Quantum Dots
We used photoluminescence spectra of single electron quasi-two-dimensional InP/GaInP(2) islands having Wigner-Seitz radius ~4 to measure the magnetic-field dispersion of the lowest s, p, and d single-particle states in the range 0–10 T. The measured dispersion revealed up to a nine-fold reduction of...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7920047/ https://www.ncbi.nlm.nih.gov/pubmed/33669253 http://dx.doi.org/10.3390/nano11020493 |
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author | Mintairov, Alexander Lebedev, Dmitrii Vlasov, Alexei Bogdanov, Andrey Ramezanpour, Shahab Blundell, Steven |
author_facet | Mintairov, Alexander Lebedev, Dmitrii Vlasov, Alexei Bogdanov, Andrey Ramezanpour, Shahab Blundell, Steven |
author_sort | Mintairov, Alexander |
collection | PubMed |
description | We used photoluminescence spectra of single electron quasi-two-dimensional InP/GaInP(2) islands having Wigner-Seitz radius ~4 to measure the magnetic-field dispersion of the lowest s, p, and d single-particle states in the range 0–10 T. The measured dispersion revealed up to a nine-fold reduction of the cyclotron frequency, indicating the formation of nano-superconducting anyon or magneto-electron (e(m)) states, in which the corresponding number of magnetic-flux-quanta vortexes and fractional charge were self-generated. We observed a linear increase in the number of vortexes versus the island size, which corresponded to a critical vortex radius equal to the Bohr radius and closed-packed topological vortex arrangements. Our observation explains the microscopic mechanism of vortex attachment in composite fermion theory of the fractional quantum Hall effect, allows its description in terms of self-localization of e(m)s and represents progress towards the goal of engineering anyon properties for fault-tolerant topological quantum gates. |
format | Online Article Text |
id | pubmed-7920047 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-79200472021-03-02 Fractional Charge States in the Magneto-Photoluminescence Spectra of Single-Electron InP/GaInP(2) Quantum Dots Mintairov, Alexander Lebedev, Dmitrii Vlasov, Alexei Bogdanov, Andrey Ramezanpour, Shahab Blundell, Steven Nanomaterials (Basel) Article We used photoluminescence spectra of single electron quasi-two-dimensional InP/GaInP(2) islands having Wigner-Seitz radius ~4 to measure the magnetic-field dispersion of the lowest s, p, and d single-particle states in the range 0–10 T. The measured dispersion revealed up to a nine-fold reduction of the cyclotron frequency, indicating the formation of nano-superconducting anyon or magneto-electron (e(m)) states, in which the corresponding number of magnetic-flux-quanta vortexes and fractional charge were self-generated. We observed a linear increase in the number of vortexes versus the island size, which corresponded to a critical vortex radius equal to the Bohr radius and closed-packed topological vortex arrangements. Our observation explains the microscopic mechanism of vortex attachment in composite fermion theory of the fractional quantum Hall effect, allows its description in terms of self-localization of e(m)s and represents progress towards the goal of engineering anyon properties for fault-tolerant topological quantum gates. MDPI 2021-02-16 /pmc/articles/PMC7920047/ /pubmed/33669253 http://dx.doi.org/10.3390/nano11020493 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Mintairov, Alexander Lebedev, Dmitrii Vlasov, Alexei Bogdanov, Andrey Ramezanpour, Shahab Blundell, Steven Fractional Charge States in the Magneto-Photoluminescence Spectra of Single-Electron InP/GaInP(2) Quantum Dots |
title | Fractional Charge States in the Magneto-Photoluminescence Spectra of Single-Electron InP/GaInP(2) Quantum Dots |
title_full | Fractional Charge States in the Magneto-Photoluminescence Spectra of Single-Electron InP/GaInP(2) Quantum Dots |
title_fullStr | Fractional Charge States in the Magneto-Photoluminescence Spectra of Single-Electron InP/GaInP(2) Quantum Dots |
title_full_unstemmed | Fractional Charge States in the Magneto-Photoluminescence Spectra of Single-Electron InP/GaInP(2) Quantum Dots |
title_short | Fractional Charge States in the Magneto-Photoluminescence Spectra of Single-Electron InP/GaInP(2) Quantum Dots |
title_sort | fractional charge states in the magneto-photoluminescence spectra of single-electron inp/gainp(2) quantum dots |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7920047/ https://www.ncbi.nlm.nih.gov/pubmed/33669253 http://dx.doi.org/10.3390/nano11020493 |
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