Optical properties of monolayer tinene in electric fields

Abstract The absorption spectra of monolayer tinene in perpendicular electric fields are studied by the tight-binding model. There are three kinds of special structures, namely shoulders, logarithmical symmetric peaks and asymmetric peaks in the square-root form, corresponding to the optical excitat...

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Autores principales:	Rong-Bin Chen, Szu-Chao Chen, Chih-Wei Chiu, Ming-Fa Lin
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/933345b6587e49419f5004aadc2dda48
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spelling	oai:doaj.org-article:933345b6587e49419f5004aadc2dda482021-12-02T16:06:32ZOptical properties of monolayer tinene in electric fields10.1038/s41598-017-01978-92045-2322https://doaj.org/article/933345b6587e49419f5004aadc2dda482017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01978-9https://doaj.org/toc/2045-2322Abstract The absorption spectra of monolayer tinene in perpendicular electric fields are studied by the tight-binding model. There are three kinds of special structures, namely shoulders, logarithmical symmetric peaks and asymmetric peaks in the square-root form, corresponding to the optical excitations of the extreme points, saddle points and constant-energy loops. With the increasing field strength, two splitting shoulder structures, which are dominated by the parabolic bands of 5p z orbitals, come to exist because of the spin-split energy bands. The frequency of threshold shoulder declines to zero and then linearly grows. The third shoulder at 0.75~0.85 eV mainly comes from (5p x , 5p y ) orbitals. The former and the latter orbitals, respectively, create the saddle-point symmetric peaks near the M point, while they hybridize with one another to generate the loop-related asymmetric peaks. Tinene quite differs from graphene, silicene, and germanene. The special relationship among the multi-orbital chemical bondings, spin-orbital couplings and Coulomb potentials accounts for the feature-rich optical properties.Rong-Bin ChenSzu-Chao ChenChih-Wei ChiuMing-Fa LinNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Rong-Bin Chen Szu-Chao Chen Chih-Wei Chiu Ming-Fa Lin Optical properties of monolayer tinene in electric fields
description	Abstract The absorption spectra of monolayer tinene in perpendicular electric fields are studied by the tight-binding model. There are three kinds of special structures, namely shoulders, logarithmical symmetric peaks and asymmetric peaks in the square-root form, corresponding to the optical excitations of the extreme points, saddle points and constant-energy loops. With the increasing field strength, two splitting shoulder structures, which are dominated by the parabolic bands of 5p z orbitals, come to exist because of the spin-split energy bands. The frequency of threshold shoulder declines to zero and then linearly grows. The third shoulder at 0.75~0.85 eV mainly comes from (5p x , 5p y ) orbitals. The former and the latter orbitals, respectively, create the saddle-point symmetric peaks near the M point, while they hybridize with one another to generate the loop-related asymmetric peaks. Tinene quite differs from graphene, silicene, and germanene. The special relationship among the multi-orbital chemical bondings, spin-orbital couplings and Coulomb potentials accounts for the feature-rich optical properties.
format	article
author	Rong-Bin Chen Szu-Chao Chen Chih-Wei Chiu Ming-Fa Lin
author_facet	Rong-Bin Chen Szu-Chao Chen Chih-Wei Chiu Ming-Fa Lin
author_sort	Rong-Bin Chen
title	Optical properties of monolayer tinene in electric fields
title_short	Optical properties of monolayer tinene in electric fields
title_full	Optical properties of monolayer tinene in electric fields
title_fullStr	Optical properties of monolayer tinene in electric fields
title_full_unstemmed	Optical properties of monolayer tinene in electric fields
title_sort	optical properties of monolayer tinene in electric fields
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/933345b6587e49419f5004aadc2dda48
work_keys_str_mv	AT rongbinchen opticalpropertiesofmonolayertineneinelectricfields AT szuchaochen opticalpropertiesofmonolayertineneinelectricfields AT chihweichiu opticalpropertiesofmonolayertineneinelectricfields AT mingfalin opticalpropertiesofmonolayertineneinelectricfields
_version_	1718384975456239616

Optical properties of monolayer tinene in electric fields

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