Abstract
We study the transmission coefficient of graphene nanoribbons with a top gate that acts as an oblique barrier. Using a Green's function method for the the Dirac-like equation, we take into account scattering among transverse modes due to the oblique barrier numerically. In contrast to the two-dimensional graphene sheet, the transmission pattern of graphene ribbons depends strongly on the electronic structure in the barrier region. Consequently, irregular structures in the transmission coefficient are predicted while perfect transmission independent of the angle and the length of the oblique barriers is still calculated in the case of metallic graphene.
| Original language | English |
|---|---|
| Pages (from-to) | 2786-2791 |
| Number of pages | 6 |
| Journal | Journal of the Korean Physical Society |
| Volume | 59 |
| Issue number | 4 |
| DOIs | |
| State | Published - 14 Oct 2011 |
Keywords
- Dirac-like equation
- Graphene
- Klein tunneling