Format

Send to

Choose Destination
Phys Rev Lett. 2009 Mar 6;102(9):096803. Epub 2009 Mar 3.

Anomalous doping effects on charge transport in graphene nanoribbons.

Author information

1
CEA, LETI, MINATEC, F38054 Grenoble, France.

Abstract

We present first-principles calculations of quantum transport in chemically doped graphene nanoribbons with a width of up to 4 nm. The presence of boron and nitrogen impurities is shown to yield resonant backscattering, whose features are strongly dependent on the symmetry and the width of the ribbon, as well as the position of the dopants. Full suppression of backscattering is obtained on the pi-pi* plateau when the impurity preserves the mirror symmetry of armchair ribbons. Further, an unusual acceptor-donor transition is observed in zigzag ribbons. These unconventional doping effects could be used to design novel types of switching devices.

Supplemental Content

Full text links

Icon for American Physical Society
Loading ...
Support Center