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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...

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Autores principales: Wang, Jinjin, Shen, Hong, Yu, Zhiyuan, Wang, Songyou, Chen, Yu-Yo, Wu, Bi-Ru, Su, Wan-Sheng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2020
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.
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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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