Electric field in atomically thin carbon films

Research output: Contribution to journalArticlepeer-review

  • External authors:
  • K. S. Novoselov
  • A. K. Geim
  • S. V. Morozov
  • D. Jiang
  • Y. Zhang
  • S. V. Dubonos
  • A. A. Firsov

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.

Bibliographical metadata

Original languageEnglish
Pages (from-to)666-669
Number of pages3
JournalScience
Volume306
Issue number5696
DOIs
Publication statusPublished - 22 Oct 2004

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