Imaging and identification of point defects in PtTe2

Abstract The properties and performance of two-dimensional (2D) materials can be greatly affected by point defects. PtTe2, a 2D material that belongs to the group 10 transition metal dichalcogenides, is a type-II Dirac semimetal, which has gained a lot of attention recently due to its potential for...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Kuanysh Zhussupbekov, Lida Ansari, John B. McManus, Ainur Zhussupbekova, Igor V. Shvets, Georg S. Duesberg, Paul K. Hurley, Farzan Gity, Cormac Ó Coileáin, Niall McEvoy
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Materials of engineering and construction. Mechanics of materials TA401-492 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/99413918247847fca1d023415606afd3
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:99413918247847fca1d023415606afd3
record_format	dspace
spelling	oai:doaj.org-article:99413918247847fca1d023415606afd32021-12-02T14:40:26ZImaging and identification of point defects in PtTe210.1038/s41699-020-00196-82397-7132https://doaj.org/article/99413918247847fca1d023415606afd32021-01-01T00:00:00Zhttps://doi.org/10.1038/s41699-020-00196-8https://doaj.org/toc/2397-7132Abstract The properties and performance of two-dimensional (2D) materials can be greatly affected by point defects. PtTe2, a 2D material that belongs to the group 10 transition metal dichalcogenides, is a type-II Dirac semimetal, which has gained a lot of attention recently due to its potential for applications in catalysis, photonics, and spintronics. Here, we provide an experimental and theoretical investigation of point defects on and near the surface of PtTe2. Using scanning tunneling microscopy and scanning tunneling spectroscopy (STS) measurements, in combination with first-principle calculations, we identify and characterize five common surface and subsurface point defects. The influence of these defects on the electronic structure of PtTe2 is explored in detail through grid STS measurements and complementary density functional theory calculations. We believe these findings will be of significance to future efforts to engineer point defects in PtTe2, which is an interesting and enticing approach to tune the charge-carrier mobility and electron–hole recombination rates, as well as the site reactivity for catalysis.Kuanysh ZhussupbekovLida AnsariJohn B. McManusAinur ZhussupbekovaIgor V. ShvetsGeorg S. DuesbergPaul K. HurleyFarzan GityCormac Ó CoileáinNiall McEvoyNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492ChemistryQD1-999ENnpj 2D Materials and Applications, Vol 5, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Materials of engineering and construction. Mechanics of materials TA401-492 Chemistry QD1-999
spellingShingle	Materials of engineering and construction. Mechanics of materials TA401-492 Chemistry QD1-999 Kuanysh Zhussupbekov Lida Ansari John B. McManus Ainur Zhussupbekova Igor V. Shvets Georg S. Duesberg Paul K. Hurley Farzan Gity Cormac Ó Coileáin Niall McEvoy Imaging and identification of point defects in PtTe2
description	Abstract The properties and performance of two-dimensional (2D) materials can be greatly affected by point defects. PtTe2, a 2D material that belongs to the group 10 transition metal dichalcogenides, is a type-II Dirac semimetal, which has gained a lot of attention recently due to its potential for applications in catalysis, photonics, and spintronics. Here, we provide an experimental and theoretical investigation of point defects on and near the surface of PtTe2. Using scanning tunneling microscopy and scanning tunneling spectroscopy (STS) measurements, in combination with first-principle calculations, we identify and characterize five common surface and subsurface point defects. The influence of these defects on the electronic structure of PtTe2 is explored in detail through grid STS measurements and complementary density functional theory calculations. We believe these findings will be of significance to future efforts to engineer point defects in PtTe2, which is an interesting and enticing approach to tune the charge-carrier mobility and electron–hole recombination rates, as well as the site reactivity for catalysis.
format	article
author	Kuanysh Zhussupbekov Lida Ansari John B. McManus Ainur Zhussupbekova Igor V. Shvets Georg S. Duesberg Paul K. Hurley Farzan Gity Cormac Ó Coileáin Niall McEvoy
author_facet	Kuanysh Zhussupbekov Lida Ansari John B. McManus Ainur Zhussupbekova Igor V. Shvets Georg S. Duesberg Paul K. Hurley Farzan Gity Cormac Ó Coileáin Niall McEvoy
author_sort	Kuanysh Zhussupbekov
title	Imaging and identification of point defects in PtTe2
title_short	Imaging and identification of point defects in PtTe2
title_full	Imaging and identification of point defects in PtTe2
title_fullStr	Imaging and identification of point defects in PtTe2
title_full_unstemmed	Imaging and identification of point defects in PtTe2
title_sort	imaging and identification of point defects in ptte2
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/99413918247847fca1d023415606afd3
work_keys_str_mv	AT kuanyshzhussupbekov imagingandidentificationofpointdefectsinptte2 AT lidaansari imagingandidentificationofpointdefectsinptte2 AT johnbmcmanus imagingandidentificationofpointdefectsinptte2 AT ainurzhussupbekova imagingandidentificationofpointdefectsinptte2 AT igorvshvets imagingandidentificationofpointdefectsinptte2 AT georgsduesberg imagingandidentificationofpointdefectsinptte2 AT paulkhurley imagingandidentificationofpointdefectsinptte2 AT farzangity imagingandidentificationofpointdefectsinptte2 AT cormacocoileain imagingandidentificationofpointdefectsinptte2 AT niallmcevoy imagingandidentificationofpointdefectsinptte2
_version_	1718390312446984192

Imaging and identification of point defects in PtTe2

Ejemplares similares