Electric field effect in atomically thin carbon films.

  • Novoselov K
  • Geim A
  • Morozov S
 et al. 
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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 10(13) per square centimeter and with room-temperature mobilities of approximately 10,000 square centimeters per volt-second can be induced by applying gate voltage.

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Authors

  • K. S. Novoselov

  • A. K. Geim

  • S.V. V Morozov

  • D. Jiang

  • Y. Zhang

  • S. V. Dubonos

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