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Electric Field-Tunable Structural Phase Transitions in Monolayer Tellurium
[Image: see text] Electronic properties of monolayer tellurium (Te) with three proposed atomic configurations under external electric field were investigated through first-principles calculations. The calculated results demonstrate that α-Te and γ-Te have indirect band gaps, whereas β-Te, when no el...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2020
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7391846/ https://www.ncbi.nlm.nih.gov/pubmed/32743196 http://dx.doi.org/10.1021/acsomega.0c01833 |
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author | Wang, Jinjin Shen, Hong Yu, Zhiyuan Wang, Songyou Chen, Yu-Yo Wu, Bi-Ru Su, Wan-Sheng |
author_facet | Wang, Jinjin Shen, Hong Yu, Zhiyuan Wang, Songyou Chen, Yu-Yo Wu, Bi-Ru Su, Wan-Sheng |
author_sort | Wang, Jinjin |
collection | PubMed |
description | [Image: see text] Electronic properties of monolayer tellurium (Te) with three proposed atomic configurations under external electric field were investigated through first-principles calculations. The calculated results demonstrate that α-Te and γ-Te have indirect band gaps, whereas β-Te, when no electric field is applied, can be considered as a direct semiconductor. An interesting structural change occurs in α- and γ-phase Te under a specific electric field strength, as does a change in structural chirality. In the presence of a perpendicular electric field, the band gaps can be modified and drawn close to 0 eV at a certain critical electric field strength. Before that, the band gaps of α-Te and γ-Te are nearly constant, while that of β-Te shows a quadratic relationship to electric field strength. These findings not only enrich our understanding of the electronic properties of monolayer tellurium but also show that monolayer tellurium has tremendous potential in nanoscale electronic devices owing to its tunable band gaps. |
format | Online Article Text |
id | pubmed-7391846 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-73918462020-07-31 Electric Field-Tunable Structural Phase Transitions in Monolayer Tellurium Wang, Jinjin Shen, Hong Yu, Zhiyuan Wang, Songyou Chen, Yu-Yo Wu, Bi-Ru Su, Wan-Sheng ACS Omega [Image: see text] Electronic properties of monolayer tellurium (Te) with three proposed atomic configurations under external electric field were investigated through first-principles calculations. The calculated results demonstrate that α-Te and γ-Te have indirect band gaps, whereas β-Te, when no electric field is applied, can be considered as a direct semiconductor. An interesting structural change occurs in α- and γ-phase Te under a specific electric field strength, as does a change in structural chirality. In the presence of a perpendicular electric field, the band gaps can be modified and drawn close to 0 eV at a certain critical electric field strength. Before that, the band gaps of α-Te and γ-Te are nearly constant, while that of β-Te shows a quadratic relationship to electric field strength. These findings not only enrich our understanding of the electronic properties of monolayer tellurium but also show that monolayer tellurium has tremendous potential in nanoscale electronic devices owing to its tunable band gaps. American Chemical Society 2020-07-16 /pmc/articles/PMC7391846/ /pubmed/32743196 http://dx.doi.org/10.1021/acsomega.0c01833 Text en Copyright © 2020 American Chemical Society This is an open access article published under a Creative Commons Attribution (CC-BY) License (http://pubs.acs.org/page/policy/authorchoice_ccby_termsofuse.html) , which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited. |
spellingShingle | Wang, Jinjin Shen, Hong Yu, Zhiyuan Wang, Songyou Chen, Yu-Yo Wu, Bi-Ru Su, Wan-Sheng Electric Field-Tunable Structural Phase Transitions in Monolayer Tellurium |
title | Electric Field-Tunable Structural Phase Transitions
in Monolayer Tellurium |
title_full | Electric Field-Tunable Structural Phase Transitions
in Monolayer Tellurium |
title_fullStr | Electric Field-Tunable Structural Phase Transitions
in Monolayer Tellurium |
title_full_unstemmed | Electric Field-Tunable Structural Phase Transitions
in Monolayer Tellurium |
title_short | Electric Field-Tunable Structural Phase Transitions
in Monolayer Tellurium |
title_sort | electric field-tunable structural phase transitions
in monolayer tellurium |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7391846/ https://www.ncbi.nlm.nih.gov/pubmed/32743196 http://dx.doi.org/10.1021/acsomega.0c01833 |
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