Half-negative Poisson’s ratio in graphene+ with intrinsic Dirac nodal loop
Summary: Carbon materials have attracted extensive attention in the past decades due to the rich configurations and outstanding properties. Numerous efforts have been dedicated to obtaining two-dimensional (2D) materials inheriting the properties of graphene. Herein, from first-principles calculatio...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-03-01
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| Series: | Cell Reports Physical Science |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666386422000571 |
| _version_ | 1819003320405065728 |
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| author | Linfeng Yu Zhenzhen Qin Huiming Wang Xiong Zheng Guangzhao Qin |
| author_facet | Linfeng Yu Zhenzhen Qin Huiming Wang Xiong Zheng Guangzhao Qin |
| author_sort | Linfeng Yu |
| collection | DOAJ |
| description | Summary: Carbon materials have attracted extensive attention in the past decades due to the rich configurations and outstanding properties. Numerous efforts have been dedicated to obtaining two-dimensional (2D) materials inheriting the properties of graphene. Herein, from first-principles calculations, we report a novel 2D carbon allotrope with a hybridized sp2-sp3 network, i.e., “grapheneplus (graphene+)”. Both the Dirac properties of graphene and the negative Poisson’s ratio (NPR) of penta-graphene are inherited in graphene+. The NPR behavior manifests itself along the out-of-plane direction only when it is stretched, namely, out-of-plane half-auxeticity, which is different from the already known NPR behavior. Besides, the Dirac nodes form a nodal loop that remains robust regardless of the application of uniaxial/biaxial strain and electric field. In addition, graphene+ is found to be energetically more stable than penta-graphene, which promises a potentially easier synthesis. In short, graphene+ could act as a strong competitor to graphene. |
| first_indexed | 2024-12-20T23:19:08Z |
| format | Article |
| id | doaj.art-89077ea8052540fdbe6d190ead8dd3ff |
| institution | Directory Open Access Journal |
| issn | 2666-3864 |
| language | English |
| last_indexed | 2024-12-20T23:19:08Z |
| publishDate | 2022-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Cell Reports Physical Science |
| spelling | doaj.art-89077ea8052540fdbe6d190ead8dd3ff2022-12-21T19:23:35ZengElsevierCell Reports Physical Science2666-38642022-03-0133100790Half-negative Poisson’s ratio in graphene+ with intrinsic Dirac nodal loopLinfeng Yu0Zhenzhen Qin1Huiming Wang2Xiong Zheng3Guangzhao Qin4State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, P.R. ChinaSchool of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, P.R. ChinaHunan Key Laboratory for Micro-Nano Energy Materials & Device and School of Physics and Optoelectronics, Xiangtan University, Xiangtan, Hunan 411105, P.R. ChinaState Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, P.R. ChinaState Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, P.R. China; Corresponding authorSummary: Carbon materials have attracted extensive attention in the past decades due to the rich configurations and outstanding properties. Numerous efforts have been dedicated to obtaining two-dimensional (2D) materials inheriting the properties of graphene. Herein, from first-principles calculations, we report a novel 2D carbon allotrope with a hybridized sp2-sp3 network, i.e., “grapheneplus (graphene+)”. Both the Dirac properties of graphene and the negative Poisson’s ratio (NPR) of penta-graphene are inherited in graphene+. The NPR behavior manifests itself along the out-of-plane direction only when it is stretched, namely, out-of-plane half-auxeticity, which is different from the already known NPR behavior. Besides, the Dirac nodes form a nodal loop that remains robust regardless of the application of uniaxial/biaxial strain and electric field. In addition, graphene+ is found to be energetically more stable than penta-graphene, which promises a potentially easier synthesis. In short, graphene+ could act as a strong competitor to graphene.http://www.sciencedirect.com/science/article/pii/S2666386422000571half-auxeticitycarbonDirac nodesnegative Poisson’s ratiographene+ |
| spellingShingle | Linfeng Yu Zhenzhen Qin Huiming Wang Xiong Zheng Guangzhao Qin Half-negative Poisson’s ratio in graphene+ with intrinsic Dirac nodal loop Cell Reports Physical Science half-auxeticity carbon Dirac nodes negative Poisson’s ratio graphene+ |
| title | Half-negative Poisson’s ratio in graphene+ with intrinsic Dirac nodal loop |
| title_full | Half-negative Poisson’s ratio in graphene+ with intrinsic Dirac nodal loop |
| title_fullStr | Half-negative Poisson’s ratio in graphene+ with intrinsic Dirac nodal loop |
| title_full_unstemmed | Half-negative Poisson’s ratio in graphene+ with intrinsic Dirac nodal loop |
| title_short | Half-negative Poisson’s ratio in graphene+ with intrinsic Dirac nodal loop |
| title_sort | half negative poisson s ratio in graphene with intrinsic dirac nodal loop |
| topic | half-auxeticity carbon Dirac nodes negative Poisson’s ratio graphene+ |
| url | http://www.sciencedirect.com/science/article/pii/S2666386422000571 |
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