Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2008-04-01
Phys. Rev. B 78, 235411 (2008)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
14 pages, 21 figures
Scientific paper
10.1103/PhysRevB.78.235411
We investigate the transmission of electrons between conducting nanoribbon leads oriented at multiples of 60 degrees 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-degree 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.
Brey Luis
Fertig Herbert A.
Iyengar Andrew
Luo Tao
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