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A Real-Space Study of Flat Bands in Nanowires

The flat electronic band has remarkable relevance in the strongly correlated phenomena mainly due to its reduced kinetic energy in comparison to the many-body potential energy. The formation of such bands in cubically structured nanowires is addressed in this article by means of a new independent ch...

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Detalles Bibliográficos
Autores principales: Sánchez, Vicenta, Wang, Chumin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10650889/
https://www.ncbi.nlm.nih.gov/pubmed/37947709
http://dx.doi.org/10.3390/nano13212864
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author Sánchez, Vicenta
Wang, Chumin
author_facet Sánchez, Vicenta
Wang, Chumin
author_sort Sánchez, Vicenta
collection PubMed
description The flat electronic band has remarkable relevance in the strongly correlated phenomena mainly due to its reduced kinetic energy in comparison to the many-body potential energy. The formation of such bands in cubically structured nanowires is addressed in this article by means of a new independent channel method and a generalized convolution theorem developed for the Green’s function including the first, second, and third neighbor interactions. A real-space renormalization method is further applied to address macroscopic-length aperiodic nanowires. We also determined the appearance condition of these flat bands, as well as their degeneracy and robustness in the face of perturbations, such as structural dislocations. Finally, the possible experimental detection of this flat band via the electronic specific heat is analyzed.
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spelling pubmed-106508892023-10-29 A Real-Space Study of Flat Bands in Nanowires Sánchez, Vicenta Wang, Chumin Nanomaterials (Basel) Communication The flat electronic band has remarkable relevance in the strongly correlated phenomena mainly due to its reduced kinetic energy in comparison to the many-body potential energy. The formation of such bands in cubically structured nanowires is addressed in this article by means of a new independent channel method and a generalized convolution theorem developed for the Green’s function including the first, second, and third neighbor interactions. A real-space renormalization method is further applied to address macroscopic-length aperiodic nanowires. We also determined the appearance condition of these flat bands, as well as their degeneracy and robustness in the face of perturbations, such as structural dislocations. Finally, the possible experimental detection of this flat band via the electronic specific heat is analyzed. MDPI 2023-10-29 /pmc/articles/PMC10650889/ /pubmed/37947709 http://dx.doi.org/10.3390/nano13212864 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Communication
Sánchez, Vicenta
Wang, Chumin
A Real-Space Study of Flat Bands in Nanowires
title A Real-Space Study of Flat Bands in Nanowires
title_full A Real-Space Study of Flat Bands in Nanowires
title_fullStr A Real-Space Study of Flat Bands in Nanowires
title_full_unstemmed A Real-Space Study of Flat Bands in Nanowires
title_short A Real-Space Study of Flat Bands in Nanowires
title_sort real-space study of flat bands in nanowires
topic Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10650889/
https://www.ncbi.nlm.nih.gov/pubmed/37947709
http://dx.doi.org/10.3390/nano13212864
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