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Dot-ring nanostructure: Rigorous analysis of many-electron effects
We discuss the quantum dot-ring nanostructure (DRN) as canonical example of a nanosystem, for which the interelectronic interactions can be evaluated exactly. The system has been selected due to its tunability, i.e., its electron wave functions can be modified much easier than in, e.g., quantum dots...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4949483/ https://www.ncbi.nlm.nih.gov/pubmed/27431436 http://dx.doi.org/10.1038/srep29887 |
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author | Biborski, Andrzej Kądzielawa, Andrzej P. Gorczyca-Goraj, Anna Zipper, Elżbieta Maśka, Maciej M. Spałek, Józef |
author_facet | Biborski, Andrzej Kądzielawa, Andrzej P. Gorczyca-Goraj, Anna Zipper, Elżbieta Maśka, Maciej M. Spałek, Józef |
author_sort | Biborski, Andrzej |
collection | PubMed |
description | We discuss the quantum dot-ring nanostructure (DRN) as canonical example of a nanosystem, for which the interelectronic interactions can be evaluated exactly. The system has been selected due to its tunability, i.e., its electron wave functions can be modified much easier than in, e.g., quantum dots. We determine many-particle states for N(e) = 2 and 3 electrons and calculate the 3- and 4-state interaction parameters, and discuss their importance. For that purpose, we combine the first- and second-quantization schemes and hence are able to single out the component single-particle contributions to the resultant many-particle state. The method provides both the ground- and the first-excited-state energies, as the exact diagonalization of the many-particle Hamiltonian is carried out. DRN provides one of the few examples for which one can determine theoretically all interaction microscopic parameters to a high accuracy. Thus the evolution of the single-particle vs. many-particle contributions to each state and its energy can be determined and tested with the increasing system size. In this manner, we contribute to the wave-function engineering with the interactions included for those few-electron systems. |
format | Online Article Text |
id | pubmed-4949483 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-49494832016-07-26 Dot-ring nanostructure: Rigorous analysis of many-electron effects Biborski, Andrzej Kądzielawa, Andrzej P. Gorczyca-Goraj, Anna Zipper, Elżbieta Maśka, Maciej M. Spałek, Józef Sci Rep Article We discuss the quantum dot-ring nanostructure (DRN) as canonical example of a nanosystem, for which the interelectronic interactions can be evaluated exactly. The system has been selected due to its tunability, i.e., its electron wave functions can be modified much easier than in, e.g., quantum dots. We determine many-particle states for N(e) = 2 and 3 electrons and calculate the 3- and 4-state interaction parameters, and discuss their importance. For that purpose, we combine the first- and second-quantization schemes and hence are able to single out the component single-particle contributions to the resultant many-particle state. The method provides both the ground- and the first-excited-state energies, as the exact diagonalization of the many-particle Hamiltonian is carried out. DRN provides one of the few examples for which one can determine theoretically all interaction microscopic parameters to a high accuracy. Thus the evolution of the single-particle vs. many-particle contributions to each state and its energy can be determined and tested with the increasing system size. In this manner, we contribute to the wave-function engineering with the interactions included for those few-electron systems. Nature Publishing Group 2016-07-19 /pmc/articles/PMC4949483/ /pubmed/27431436 http://dx.doi.org/10.1038/srep29887 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Biborski, Andrzej Kądzielawa, Andrzej P. Gorczyca-Goraj, Anna Zipper, Elżbieta Maśka, Maciej M. Spałek, Józef Dot-ring nanostructure: Rigorous analysis of many-electron effects |
title | Dot-ring nanostructure: Rigorous analysis of many-electron effects |
title_full | Dot-ring nanostructure: Rigorous analysis of many-electron effects |
title_fullStr | Dot-ring nanostructure: Rigorous analysis of many-electron effects |
title_full_unstemmed | Dot-ring nanostructure: Rigorous analysis of many-electron effects |
title_short | Dot-ring nanostructure: Rigorous analysis of many-electron effects |
title_sort | dot-ring nanostructure: rigorous analysis of many-electron effects |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4949483/ https://www.ncbi.nlm.nih.gov/pubmed/27431436 http://dx.doi.org/10.1038/srep29887 |
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