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Article: Band gap scaling laws in group IV nanotubes
Title | Band gap scaling laws in group IV nanotubes |
---|---|
Authors | |
Keywords | Group IV elements Band gap scaling law Nanotube |
Issue Date | 2017 |
Citation | Nanotechnology, 2017, v. 28, n. 11, article no. 115202 How to Cite? |
Abstract | © 2017 IOP Publishing Ltd. By using the first-principles calculations, the band gap properties of nanotubes formed by group IV elements have been investigated systemically. Our results reveal that for armchair nanotubes, the energy gaps at K points in the Brillouin zone decrease as 1/r scaling law with the radii (r) increasing, while they are scaled by -1/r2+ C at Γ points, here, C is a constant. Further studies show that such scaling law of K points is independent of both the chiral vector and the type of elements. Therefore, the band gaps of nanotubes for a given radius can be determined by these scaling laws easily. Interestingly, we also predict the existence of indirect band gap for both germanium and tin nanotubes. Our new findings provide an efficient way to determine the band gaps of group IV element nanotubes by knowing the radii, as well as to facilitate the design of functional nanodevices. |
Persistent Identifier | http://hdl.handle.net/10722/262886 |
ISSN | 2023 Impact Factor: 2.9 2023 SCImago Journal Rankings: 0.631 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Wang, Chongze | - |
dc.contributor.author | Fu, Xiaonan | - |
dc.contributor.author | Guo, Yangyang | - |
dc.contributor.author | Guo, Zhengxiao | - |
dc.contributor.author | Xia, Congxin | - |
dc.contributor.author | Jia, Yu | - |
dc.date.accessioned | 2018-10-08T09:28:43Z | - |
dc.date.available | 2018-10-08T09:28:43Z | - |
dc.date.issued | 2017 | - |
dc.identifier.citation | Nanotechnology, 2017, v. 28, n. 11, article no. 115202 | - |
dc.identifier.issn | 0957-4484 | - |
dc.identifier.uri | http://hdl.handle.net/10722/262886 | - |
dc.description.abstract | © 2017 IOP Publishing Ltd. By using the first-principles calculations, the band gap properties of nanotubes formed by group IV elements have been investigated systemically. Our results reveal that for armchair nanotubes, the energy gaps at K points in the Brillouin zone decrease as 1/r scaling law with the radii (r) increasing, while they are scaled by -1/r2+ C at Γ points, here, C is a constant. Further studies show that such scaling law of K points is independent of both the chiral vector and the type of elements. Therefore, the band gaps of nanotubes for a given radius can be determined by these scaling laws easily. Interestingly, we also predict the existence of indirect band gap for both germanium and tin nanotubes. Our new findings provide an efficient way to determine the band gaps of group IV element nanotubes by knowing the radii, as well as to facilitate the design of functional nanodevices. | - |
dc.language | eng | - |
dc.relation.ispartof | Nanotechnology | - |
dc.subject | Group IV elements | - |
dc.subject | Band gap scaling law | - |
dc.subject | Nanotube | - |
dc.title | Band gap scaling laws in group IV nanotubes | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1088/1361-6528/aa5b3e | - |
dc.identifier.scopus | eid_2-s2.0-85014512659 | - |
dc.identifier.volume | 28 | - |
dc.identifier.issue | 11 | - |
dc.identifier.spage | article no. 115202 | - |
dc.identifier.epage | article no. 115202 | - |
dc.identifier.eissn | 1361-6528 | - |
dc.identifier.isi | WOS:000400812700002 | - |
dc.identifier.issnl | 0957-4484 | - |