Abstract
We characterise the electronic properties of triangulenes and study their use as building blocks in nanotube metallic Y-junctions. We calculate the ballistic conductance of such junctions using the Landauer formalism, and identify the existence of a non-conduction energy window when the system has a C 3 axis centered on a six-membered ring. Such a system can exploit a local C 6 symmetry to stabilize the central region of the Y-junction, thereby opening a band gap.
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