2008/04/01 by Andrew Iyengar, A. Iyengar, T. Luo +3 · 1 citation
Computer Science · Materials Science · Mathematics · Physics and Astronomy · #Computer science #Condensed matter physics #Conductance #Electron #Geometry #Graphene #Graphene research and applications #Materials science #Mathematics #Nanotechnology #Physics #Quantum and electron transport phenomena #Quantum mechanics #Quantum-Dot Cellular Automata #Ribbon #Telecommunications #Transmission (telecommunications) #Zigzag #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.78.235411
published as Phys. Rev. B 78, 235411 (2008) · 14 pages, 21 figures
arxiv created 2008/04/01 · openalex publication_date 2008/12/04 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We investigate the transmission of electrons between conducting nanoribbon leads oriented at multiples of 60\ifmmode^∘\else\textdegree\fi with respect to one another, connected either directly or through graphene polygons. A mode-matching analysis suggests that the transmission at low energies is sensitive to the precise way in which the ribbons are joined. Most strikingly, we find that armchair leads forming 120\ifmmode^∘\else\textdegree\fi angles can support either a large transmission or a highly suppressed transmission, depending on the specific geometry. Tight-binding calculations demonstrate the effects in detail and are also used to study transmission at higher energies as well as for zigzag ribbon leads.