Substitution-induced spin-splitted surface states in topological insulator (Bi(1−x)Sb(x))(2)Te(3)

We present a study on surface states of topological insulator (Bi(1−x)Sb(x))(2)Te(3) by imaging quasiparticle interference patterns (QPI) using low temperature scanning tunneling microscope. Besides the topological Dirac state, we observed another surface state with chiral spin texture within the co...

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Detalles Bibliográficos
Autores principales: He, Xiaoyue, Li, Hui, Chen, Lan, Wu, Kehui
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4351528/
https://www.ncbi.nlm.nih.gov/pubmed/25743262
http://dx.doi.org/10.1038/srep08830
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author He, Xiaoyue
Li, Hui
Chen, Lan
Wu, Kehui
author_facet He, Xiaoyue
Li, Hui
Chen, Lan
Wu, Kehui
author_sort He, Xiaoyue
collection PubMed
description We present a study on surface states of topological insulator (Bi(1−x)Sb(x))(2)Te(3) by imaging quasiparticle interference patterns (QPI) using low temperature scanning tunneling microscope. Besides the topological Dirac state, we observed another surface state with chiral spin texture within the conduction band range. The quasiparticle scattering in this state is selectively suppressed. Combined with first-principles calculations, we attribute this state to a spin-splitted band induced by the substitution of Bi with Sb atoms. Our results demonstrate that the coexistence of topological order and alloying may open wider tunability in quantum materials.
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spelling pubmed-43515282015-03-10 Substitution-induced spin-splitted surface states in topological insulator (Bi(1−x)Sb(x))(2)Te(3) He, Xiaoyue Li, Hui Chen, Lan Wu, Kehui Sci Rep Article We present a study on surface states of topological insulator (Bi(1−x)Sb(x))(2)Te(3) by imaging quasiparticle interference patterns (QPI) using low temperature scanning tunneling microscope. Besides the topological Dirac state, we observed another surface state with chiral spin texture within the conduction band range. The quasiparticle scattering in this state is selectively suppressed. Combined with first-principles calculations, we attribute this state to a spin-splitted band induced by the substitution of Bi with Sb atoms. Our results demonstrate that the coexistence of topological order and alloying may open wider tunability in quantum materials. Nature Publishing Group 2015-03-06 /pmc/articles/PMC4351528/ /pubmed/25743262 http://dx.doi.org/10.1038/srep08830 Text en Copyright © 2015, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 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/4.0/
spellingShingle Article
He, Xiaoyue
Li, Hui
Chen, Lan
Wu, Kehui
Substitution-induced spin-splitted surface states in topological insulator (Bi(1−x)Sb(x))(2)Te(3)
title Substitution-induced spin-splitted surface states in topological insulator (Bi(1−x)Sb(x))(2)Te(3)
title_full Substitution-induced spin-splitted surface states in topological insulator (Bi(1−x)Sb(x))(2)Te(3)
title_fullStr Substitution-induced spin-splitted surface states in topological insulator (Bi(1−x)Sb(x))(2)Te(3)
title_full_unstemmed Substitution-induced spin-splitted surface states in topological insulator (Bi(1−x)Sb(x))(2)Te(3)
title_short Substitution-induced spin-splitted surface states in topological insulator (Bi(1−x)Sb(x))(2)Te(3)
title_sort substitution-induced spin-splitted surface states in topological insulator (bi(1−x)sb(x))(2)te(3)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4351528/
https://www.ncbi.nlm.nih.gov/pubmed/25743262
http://dx.doi.org/10.1038/srep08830
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