Electric Field Effect in Atomically Thin Carbon Films (original) (raw)
ADS
;
- Geim, A. K. ;
- Morozov, S. V. ;
- Jiang, D. ;
- Zhang, Y. ;
- Dubonos, S. V. ;
- Grigorieva, I. V. ;
- Firsov, A. A.
Abstract
We describe monocrystalline graphitic films, which are a few atoms thick but are nonetheless stable under ambient conditions, metallic, and of remarkably high quality. The films are found to be a two-dimensional semimetal with a tiny overlap between valence and conductance bands, and they exhibit a strong ambipolar electric field effect such that electrons and holes in concentrations up to 1013 per square centimeter and with room-temperature mobilities of ~10,000 square centimeters per volt-second can be induced by applying gate voltage.
Publication:
Science
Pub Date:
October 2004
DOI:
10.48550/arXiv.cond-mat/0410550
arXiv:
Bibcode:
Keywords:
- APP PHYSICS;
- Condensed Matter - Materials Science;
- Condensed Matter - Mesoscopic Systems and Quantum Hall Effect
E-Print:
Science, Vol 306, 666 (2004)