Transfer characteristics in graphene field-effect transistors with Co contacts
Abstract
Graphene field-effect transistors with Co contacts as source and drain electrodes show anomalous distorted transfer characteristics. The anomaly appears only in short-channel devices (shorter than approximately 3 μm) and originates from a contact-induced effect. Band alteration of a graphene channel by the contacts is discussed as a possible mechanism for the anomalous characteristics observed.
- Publication:
-
Applied Physics Letters
- Pub Date:
- October 2008
- DOI:
- 10.1063/1.2998396
- arXiv:
- arXiv:0810.3057
- Bibcode:
- 2008ApPhL..93o2104N
- Keywords:
-
- 85.30.Tv;
- Field effect devices;
- Condensed Matter - Materials Science
- E-Print:
- 10 pages, 3 figures, Appl. Phys. Lett