Year: 2008
Type: article
Abstract: We investigate the transmission of electrons between conducting nanoribbon leads oriented at multiples of $60\ifmmode^\circ\else\textdegree\fi{}$ 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 $120\ifmmode^\circ\else\textdegree\fi{}$ 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.
Source: Physical Review B
Authors: A. Iyengar, T. Luo, H. A. Fertig, L. Brey
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1995348395