We study numerically cross conductances in a four-terminal all-graphene setup. We show that far away from the Dirac point current flows along zigzag directions, giving the possibility to guide the current between terminals using a tunable pn-junction. The device operates as a gate-controlled current switch, and the electronic properties of graphene are crucial for efficient performance.
@article{arxiv.0906.3996,
title = {Gate-controlled current switch in graphene},
author = {Kimmo Sääskilahti and Ari Harju and Pirjo Pasanen},
journal= {arXiv preprint arXiv:0906.3996},
year = {2009}
}
Comments
8 pages, 4 figures; minor clarifications, removed content