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Delocalized Surface State in Epitaxial Si(111) Film with Spontaneous √3 × √3 Superstructure
The “multilayer silicene” films were grown on Ag(111), with increasing thickness above 30 monolayers (ML). Scanning tunneling microscopy (STM) observations suggest that the “multilayer silicene” is indeed a bulk-like Si(111) film with a (√3 × √3)R30° honeycomb superstructure on surface. The possibil...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4551997/ https://www.ncbi.nlm.nih.gov/pubmed/26316281 http://dx.doi.org/10.1038/srep13590 |
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author | Chen, Jian Du, Yi Li, Zhi Li, Wenbin Feng, Baojie Qiu, Jinlan Cheng, Peng Xue Dou, Shi Chen, Lan Wu, Kehui |
author_facet | Chen, Jian Du, Yi Li, Zhi Li, Wenbin Feng, Baojie Qiu, Jinlan Cheng, Peng Xue Dou, Shi Chen, Lan Wu, Kehui |
author_sort | Chen, Jian |
collection | PubMed |
description | The “multilayer silicene” films were grown on Ag(111), with increasing thickness above 30 monolayers (ML). Scanning tunneling microscopy (STM) observations suggest that the “multilayer silicene” is indeed a bulk-like Si(111) film with a (√3 × √3)R30° honeycomb superstructure on surface. The possibility for formation of Si(111)(√3 × √3)R30°-Ag reconstruction on the surface can be distinctively ruled out by peeling off the surface layer with the STM tip. On this surface, delocalized surface state as well as linear energy-momentum dispersion was observed from quasiparticle interference patterns. Our results indicate that a bulklike silicon film with diamondlike structure can also host delocalized surface state, which is even more attractive for potential applications, such as new generation of nanodevices based on Si. |
format | Online Article Text |
id | pubmed-4551997 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-45519972015-09-09 Delocalized Surface State in Epitaxial Si(111) Film with Spontaneous √3 × √3 Superstructure Chen, Jian Du, Yi Li, Zhi Li, Wenbin Feng, Baojie Qiu, Jinlan Cheng, Peng Xue Dou, Shi Chen, Lan Wu, Kehui Sci Rep Article The “multilayer silicene” films were grown on Ag(111), with increasing thickness above 30 monolayers (ML). Scanning tunneling microscopy (STM) observations suggest that the “multilayer silicene” is indeed a bulk-like Si(111) film with a (√3 × √3)R30° honeycomb superstructure on surface. The possibility for formation of Si(111)(√3 × √3)R30°-Ag reconstruction on the surface can be distinctively ruled out by peeling off the surface layer with the STM tip. On this surface, delocalized surface state as well as linear energy-momentum dispersion was observed from quasiparticle interference patterns. Our results indicate that a bulklike silicon film with diamondlike structure can also host delocalized surface state, which is even more attractive for potential applications, such as new generation of nanodevices based on Si. Nature Publishing Group 2015-08-28 /pmc/articles/PMC4551997/ /pubmed/26316281 http://dx.doi.org/10.1038/srep13590 Text en Copyright © 2015, Macmillan Publishers Limited 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 Chen, Jian Du, Yi Li, Zhi Li, Wenbin Feng, Baojie Qiu, Jinlan Cheng, Peng Xue Dou, Shi Chen, Lan Wu, Kehui Delocalized Surface State in Epitaxial Si(111) Film with Spontaneous √3 × √3 Superstructure |
title | Delocalized Surface State in Epitaxial Si(111) Film with Spontaneous √3 × √3 Superstructure |
title_full | Delocalized Surface State in Epitaxial Si(111) Film with Spontaneous √3 × √3 Superstructure |
title_fullStr | Delocalized Surface State in Epitaxial Si(111) Film with Spontaneous √3 × √3 Superstructure |
title_full_unstemmed | Delocalized Surface State in Epitaxial Si(111) Film with Spontaneous √3 × √3 Superstructure |
title_short | Delocalized Surface State in Epitaxial Si(111) Film with Spontaneous √3 × √3 Superstructure |
title_sort | delocalized surface state in epitaxial si(111) film with spontaneous √3 × √3 superstructure |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4551997/ https://www.ncbi.nlm.nih.gov/pubmed/26316281 http://dx.doi.org/10.1038/srep13590 |
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