CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
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Electronic Structures of Carbon-Based Kagomé Lattices |
ZHANG Dong1**, LIN Liang-Zhong1, ZHU Jia-Ji2 |
1The State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083 2Center for Modern Physics and Department of Physics, Chongqing University, Chongqing 400044
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Cite this article: |
ZHANG Dong, LIN Liang-Zhong, ZHU Jia-Ji 2014 Chin. Phys. Lett. 31 028102 |
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Abstract A structurally stable two-dimensional carbon allotrope of graphene is studied theoretically based on the first-principles calculations. This allotrope can be formed by inserting acetylene and diacetylene fragments into β-graphyne. The calculations on structure and electronic energy spectra show that the carbon Kagomé lattice is a structurally stable semimetal with the Dirac cones below the Fermi surface, in contrast to the Dirac points at the Fermi surface in intrinsic graphene.
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Received: 03 December 2013
Published: 28 February 2014
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PACS: |
81.05.U-
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(Carbon/carbon-based materials)
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71.20.-b
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(Electron density of states and band structure of crystalline solids)
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31.15.A-
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(Ab initio calculations)
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