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Possible flat band bending of the Bi(1.5)Sb(0.5)Te(1.7)Se(1.3) crystal cleaved in an ambient air probed by terahertz emission spectroscopy
We investigate an evolution of the surface electronic state of the Bi(1.5)Sb(0.5)Te(1.7)Se(1.3) single crystal, which is one of the most bulk insulating topological insulators, by examining terahertz light emitted from the sample surface upon the illumination of the near-infrared femtosecond laser p...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5090861/ https://www.ncbi.nlm.nih.gov/pubmed/27805036 http://dx.doi.org/10.1038/srep36343 |
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author | Park, Soon Hee Hamh, Sun Young Park, Joonbum Kim, Jun Sung Lee, Jong Seok |
author_facet | Park, Soon Hee Hamh, Sun Young Park, Joonbum Kim, Jun Sung Lee, Jong Seok |
author_sort | Park, Soon Hee |
collection | PubMed |
description | We investigate an evolution of the surface electronic state of the Bi(1.5)Sb(0.5)Te(1.7)Se(1.3) single crystal, which is one of the most bulk insulating topological insulators, by examining terahertz light emitted from the sample surface upon the illumination of the near-infrared femtosecond laser pulses. We find that the surface state with a flat band bending can appear in the course of the natural maturation process of the surface state in an ambient air. Furthermore, we demonstrate that the evolution of the surface electronic state can be accelerated, decelerated, or even stopped by controlling environmental conditions to contain different amount of H(2)O, in particular. |
format | Online Article Text |
id | pubmed-5090861 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-50908612016-11-08 Possible flat band bending of the Bi(1.5)Sb(0.5)Te(1.7)Se(1.3) crystal cleaved in an ambient air probed by terahertz emission spectroscopy Park, Soon Hee Hamh, Sun Young Park, Joonbum Kim, Jun Sung Lee, Jong Seok Sci Rep Article We investigate an evolution of the surface electronic state of the Bi(1.5)Sb(0.5)Te(1.7)Se(1.3) single crystal, which is one of the most bulk insulating topological insulators, by examining terahertz light emitted from the sample surface upon the illumination of the near-infrared femtosecond laser pulses. We find that the surface state with a flat band bending can appear in the course of the natural maturation process of the surface state in an ambient air. Furthermore, we demonstrate that the evolution of the surface electronic state can be accelerated, decelerated, or even stopped by controlling environmental conditions to contain different amount of H(2)O, in particular. Nature Publishing Group 2016-11-02 /pmc/articles/PMC5090861/ /pubmed/27805036 http://dx.doi.org/10.1038/srep36343 Text en Copyright © 2016, The Author(s) 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 to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Park, Soon Hee Hamh, Sun Young Park, Joonbum Kim, Jun Sung Lee, Jong Seok Possible flat band bending of the Bi(1.5)Sb(0.5)Te(1.7)Se(1.3) crystal cleaved in an ambient air probed by terahertz emission spectroscopy |
title | Possible flat band bending of the Bi(1.5)Sb(0.5)Te(1.7)Se(1.3) crystal cleaved in an ambient air probed by terahertz emission spectroscopy |
title_full | Possible flat band bending of the Bi(1.5)Sb(0.5)Te(1.7)Se(1.3) crystal cleaved in an ambient air probed by terahertz emission spectroscopy |
title_fullStr | Possible flat band bending of the Bi(1.5)Sb(0.5)Te(1.7)Se(1.3) crystal cleaved in an ambient air probed by terahertz emission spectroscopy |
title_full_unstemmed | Possible flat band bending of the Bi(1.5)Sb(0.5)Te(1.7)Se(1.3) crystal cleaved in an ambient air probed by terahertz emission spectroscopy |
title_short | Possible flat band bending of the Bi(1.5)Sb(0.5)Te(1.7)Se(1.3) crystal cleaved in an ambient air probed by terahertz emission spectroscopy |
title_sort | possible flat band bending of the bi(1.5)sb(0.5)te(1.7)se(1.3) crystal cleaved in an ambient air probed by terahertz emission spectroscopy |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5090861/ https://www.ncbi.nlm.nih.gov/pubmed/27805036 http://dx.doi.org/10.1038/srep36343 |
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