Intrinsic Topological Insulator Bi(1.5)Sb(0.5)Te(3-x)Se(x) Thin Crystals

The quaternary topological insulator (Bi,Sb)(2)(Te,Se)(3) has demonstrated topological surface states with an insulating bulk. Scientists have identified an optimized composition of Bi(1.5)Sb(0.5)Te(1.7)Se(1.3) with the highest resistivity reported. But the physics that drive to this composition rem...

Descripción completa

Detalles Bibliográficos
Autores principales: Wang, Wei, Li, Li, Zou, Wenqin, He, Liang, Song, Fengqi, Zhang, Rong, Wu, Xiaoshan, Zhang, Fengming
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4300459/
https://www.ncbi.nlm.nih.gov/pubmed/25604579
http://dx.doi.org/10.1038/srep07931
_version_ 1782353524505444352
author Wang, Wei
Li, Li
Zou, Wenqin
He, Liang
Song, Fengqi
Zhang, Rong
Wu, Xiaoshan
Zhang, Fengming
author_facet Wang, Wei
Li, Li
Zou, Wenqin
He, Liang
Song, Fengqi
Zhang, Rong
Wu, Xiaoshan
Zhang, Fengming
author_sort Wang, Wei
collection PubMed
description The quaternary topological insulator (Bi,Sb)(2)(Te,Se)(3) has demonstrated topological surface states with an insulating bulk. Scientists have identified an optimized composition of Bi(1.5)Sb(0.5)Te(1.7)Se(1.3) with the highest resistivity reported. But the physics that drive to this composition remains unclear. Here we report the crystal structure and the magneto-transport properties of Bi(1.5)Sb(0.5)Te(3-x)Se(x) (BSTS) series. A correlation between the structure and the physical properties has been revealed. We found out that within the rhombohedral structure, the composition with most Te substituting Se has the highest resistivity. On the other hand, segregation of other composition phases will introduce much higher bulk concentration.
format Online
Article
Text
id pubmed-4300459
institution National Center for Biotechnology Information
language English
publishDate 2015
publisher Nature Publishing Group
record_format MEDLINE/PubMed
spelling pubmed-43004592015-01-27 Intrinsic Topological Insulator Bi(1.5)Sb(0.5)Te(3-x)Se(x) Thin Crystals Wang, Wei Li, Li Zou, Wenqin He, Liang Song, Fengqi Zhang, Rong Wu, Xiaoshan Zhang, Fengming Sci Rep Article The quaternary topological insulator (Bi,Sb)(2)(Te,Se)(3) has demonstrated topological surface states with an insulating bulk. Scientists have identified an optimized composition of Bi(1.5)Sb(0.5)Te(1.7)Se(1.3) with the highest resistivity reported. But the physics that drive to this composition remains unclear. Here we report the crystal structure and the magneto-transport properties of Bi(1.5)Sb(0.5)Te(3-x)Se(x) (BSTS) series. A correlation between the structure and the physical properties has been revealed. We found out that within the rhombohedral structure, the composition with most Te substituting Se has the highest resistivity. On the other hand, segregation of other composition phases will introduce much higher bulk concentration. Nature Publishing Group 2015-01-21 /pmc/articles/PMC4300459/ /pubmed/25604579 http://dx.doi.org/10.1038/srep07931 Text en Copyright © 2015, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-nd/4.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/
spellingShingle Article
Wang, Wei
Li, Li
Zou, Wenqin
He, Liang
Song, Fengqi
Zhang, Rong
Wu, Xiaoshan
Zhang, Fengming
Intrinsic Topological Insulator Bi(1.5)Sb(0.5)Te(3-x)Se(x) Thin Crystals
title Intrinsic Topological Insulator Bi(1.5)Sb(0.5)Te(3-x)Se(x) Thin Crystals
title_full Intrinsic Topological Insulator Bi(1.5)Sb(0.5)Te(3-x)Se(x) Thin Crystals
title_fullStr Intrinsic Topological Insulator Bi(1.5)Sb(0.5)Te(3-x)Se(x) Thin Crystals
title_full_unstemmed Intrinsic Topological Insulator Bi(1.5)Sb(0.5)Te(3-x)Se(x) Thin Crystals
title_short Intrinsic Topological Insulator Bi(1.5)Sb(0.5)Te(3-x)Se(x) Thin Crystals
title_sort intrinsic topological insulator bi(1.5)sb(0.5)te(3-x)se(x) thin crystals
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4300459/
https://www.ncbi.nlm.nih.gov/pubmed/25604579
http://dx.doi.org/10.1038/srep07931
work_keys_str_mv AT wangwei intrinsictopologicalinsulatorbi15sb05te3xsexthincrystals
AT lili intrinsictopologicalinsulatorbi15sb05te3xsexthincrystals
AT zouwenqin intrinsictopologicalinsulatorbi15sb05te3xsexthincrystals
AT heliang intrinsictopologicalinsulatorbi15sb05te3xsexthincrystals
AT songfengqi intrinsictopologicalinsulatorbi15sb05te3xsexthincrystals
AT zhangrong intrinsictopologicalinsulatorbi15sb05te3xsexthincrystals
AT wuxiaoshan intrinsictopologicalinsulatorbi15sb05te3xsexthincrystals
AT zhangfengming intrinsictopologicalinsulatorbi15sb05te3xsexthincrystals

Ejemplares similares