The existence/absence of Dirac cones in graphynes
We investigate the physical origin of the existence or absence of Dirac cones in graphynes by combining first-principles calculations with the downfolding method. We clarify that acetylenic linkages (−C≡C−) can be reduced into an effective hopping term between vertex atoms, and thus various graphyne...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2013-01-01
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| Series: | New Journal of Physics |
| Online Access: | https://doi.org/10.1088/1367-2630/15/2/023004 |