Zigzag graphene nanoribbon single-electron transistors

Chowdhury, R., Adhikari, S., Rees, P.
Physica B: Condensed Matter, 407[5] (2012), pp. 855-858.

We introduce the ab-initio framework for zigzag-edged graphene fragment for single-electron transistor (SET) operating in the coulumb blockade regime. Graphene is modeled using the density-functional theory and the environment is described by a continuum model. The interaction between graphene and the SET environment is treated self-consistently through the Poisson equation. We calculate the charging energy as a function of an external gate potential, and from this we obtain the charge stability diagram. Specifically, the importance of including re-normalization of the charge states due to the polarization of the environment has been demonstrated.

@article{jp152,
  author = {R. Chowdhury and S. Adhikari and P. Rees},
  title = {Zigzag graphene nanoribbon single-electron transistors},
  journal = {Physica B: Condensed Matter},
  year = {2012},
  volume={407},
  number={5},
  pages={855-858}
}