Quantum Transport of Edge States in Zigzag Graphene NanoRibbon in the Presence of an Abrupt Structure Change due to Missing Atoms

In this article, the edge transport of Zigzag Graphene NanoRibbon (ZGNR) in the presence of an abrupt structure change due to missing atoms, which we define as `cut' is studied through Non-Equilibrium Green's Function formalism. Interesting results are found that are notably different for difference in the width of the `cut'. For ZGNR, depending on the width of the `cut', the electrons can be fully transmitted (T = 1) or fully blocked (T = 0) in the device scattering region.