Structural and electronic properties of T graphene nanotubes: a first-principles study
An allotrope of graphene named T graphene was reported to reveal Dirac-like fermions and high Fermi velocity in its buckled phase similar to graphene. However, these Dirac fermions were questioned to be artificial, caused by band folding under the unstable buckling in T graphene. Here, we report fir...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2019-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/ab1808 |
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| author | Lin-Han Xu Jia-Qi Hu Jian-Hua Zhang Shun-Qing Wu Feng-Chuan Chuang Zi-Zhong Zhu Kai-Ming Ho |
| author_facet | Lin-Han Xu Jia-Qi Hu Jian-Hua Zhang Shun-Qing Wu Feng-Chuan Chuang Zi-Zhong Zhu Kai-Ming Ho |
| author_sort | Lin-Han Xu |
| collection | DOAJ |
| description | An allotrope of graphene named T graphene was reported to reveal Dirac-like fermions and high Fermi velocity in its buckled phase similar to graphene. However, these Dirac fermions were questioned to be artificial, caused by band folding under the unstable buckling in T graphene. Here, we report first-principles studies on the structural and electronic properties of T graphene nanotubes which are systems rolled up from the two-dimensional planar sheet of T graphene. The ‘artificial’ Dirac fermions in T graphene are turned into reality in the T graphene nanotubes. Two sets of T graphene nanotubes with different diameters were studied. One set of T graphene nanotubes reveals a semi-metallic property and shows an increasing of the number of Dirac points with the diameters. Another set of T graphene nanotubes reveals a metallic property. Our study indicates that rolling up the allotrope of graphene can provide a new avenue for developing new semimetal materials with fascinating properties. |
| first_indexed | 2024-03-12T16:26:06Z |
| format | Article |
| id | doaj.art-117df640d0a14e5c842a4c5d1764ac5a |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:26:06Z |
| publishDate | 2019-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-117df640d0a14e5c842a4c5d1764ac5a2023-08-08T15:41:24ZengIOP PublishingNew Journal of Physics1367-26302019-01-0121505301510.1088/1367-2630/ab1808Structural and electronic properties of T graphene nanotubes: a first-principles studyLin-Han Xu0Jia-Qi Hu1Jian-Hua Zhang2Shun-Qing Wu3https://orcid.org/0000-0002-2545-0054Feng-Chuan Chuang4https://orcid.org/0000-0003-0351-4253Zi-Zhong Zhu5https://orcid.org/0000-0001-5353-4418Kai-Ming Ho6Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Department of Physics, Jiujiang Research Institute, Xiamen University , Xiamen, People’s Republic of ChinaCollaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Department of Physics, Jiujiang Research Institute, Xiamen University , Xiamen, People’s Republic of ChinaInstitution of Electromagnetics and Acoustics, and department of Electronic Science of Xiamen University , Xiamen, People’s Republic of ChinaCollaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Department of Physics, Jiujiang Research Institute, Xiamen University , Xiamen, People’s Republic of ChinaDepartment of Physics, National Sun Yat-Sen University , Kaohsiung 804, TaiwanCollaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Department of Physics, Jiujiang Research Institute, Xiamen University , Xiamen, People’s Republic of ChinaInternational Center for Quantum Design of Functional Materials (ICQD), University of Science and Technology of China , Hefei, Anhui 230026, People’s Republic of China; Department of Physics and Astronomy, Iowa State University , Ames, IA 50011, United States of AmericaAn allotrope of graphene named T graphene was reported to reveal Dirac-like fermions and high Fermi velocity in its buckled phase similar to graphene. However, these Dirac fermions were questioned to be artificial, caused by band folding under the unstable buckling in T graphene. Here, we report first-principles studies on the structural and electronic properties of T graphene nanotubes which are systems rolled up from the two-dimensional planar sheet of T graphene. The ‘artificial’ Dirac fermions in T graphene are turned into reality in the T graphene nanotubes. Two sets of T graphene nanotubes with different diameters were studied. One set of T graphene nanotubes reveals a semi-metallic property and shows an increasing of the number of Dirac points with the diameters. Another set of T graphene nanotubes reveals a metallic property. Our study indicates that rolling up the allotrope of graphene can provide a new avenue for developing new semimetal materials with fascinating properties.https://doi.org/10.1088/1367-2630/ab1808T graphenenanotubeselectronic structuresfirst-principles calculations |
| spellingShingle | Lin-Han Xu Jia-Qi Hu Jian-Hua Zhang Shun-Qing Wu Feng-Chuan Chuang Zi-Zhong Zhu Kai-Ming Ho Structural and electronic properties of T graphene nanotubes: a first-principles study New Journal of Physics T graphene nanotubes electronic structures first-principles calculations |
| title | Structural and electronic properties of T graphene nanotubes: a first-principles study |
| title_full | Structural and electronic properties of T graphene nanotubes: a first-principles study |
| title_fullStr | Structural and electronic properties of T graphene nanotubes: a first-principles study |
| title_full_unstemmed | Structural and electronic properties of T graphene nanotubes: a first-principles study |
| title_short | Structural and electronic properties of T graphene nanotubes: a first-principles study |
| title_sort | structural and electronic properties of t graphene nanotubes a first principles study |
| topic | T graphene nanotubes electronic structures first-principles calculations |
| url | https://doi.org/10.1088/1367-2630/ab1808 |
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