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Figure 1 | Nanoscale Research Letters

Figure 1

From: Dirac cone in α-graphdiyne: a first-principles study

Figure 1

Crystal structure of α -graphdiyne. (a) A unit cell and (b) a 4×4 supercell. (c) A simplified model to mimic the hopping matrix elements along two carbon triple bonds in α-graphdiyne. Carbon atoms 1 and 6 are at vertices of a hexagon in α-graphdiyne. The black balls and blue line represent carbon atoms and the crystalline cell, respectively.

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