Journal of the Korean Vacuum Society (한국진공학회지)

The Korean Vacuum Society (한국진공학회)
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Anisotropic Electronic Transport of Graphene on a Nano-Patterned Substrate

나노패턴된 기판 위에서의 그래핀의 비등방성 전자 수송 특성

  • Khalil, H.M.W. (Department of Physics and Graphene Research Institute, Sejong University) ;
  • Kelekci, O. (Department of Physics and Graphene Research Institute, Sejong University) ;
  • Noh, H. (Department of Physics and Graphene Research Institute, Sejong University) ;
  • Xie, Y.H. (Department of Materials Science and Engineering, University of California)
  • Received : 2012.08.03
  • Accepted : 2012.09.17
  • Published : 2012.09.30
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Abstract

We report on the measurements of electronic transport properties of CVD graphene placed on a pre-patterned substrate with periodic nano trenches. A strong anisotropy has been observed between the transport parallel and perpendicular to the trenches. Characteristically different weak localization corrections have been also observed when the transport was perpendicular to the trench, which is interpreted as due to a density inhomogeneity generated by the potential modulations.

주기적인 나노트랜치 패턴이 있는 기판 위에 놓인 CVD 그래핀의 전도특성을 측정하였다. 나노트랜치에 대해 평행한 방향과 수직한 방향 사이에 전도특성의 큰 비등방성을 발견하였다. 전기 전도의 방향이 나노트랜치에 수직한 경우, 약한 한곳모임의 특성에 있어서도 큰 차이점이 발견되었는데, 이는 퍼텐셜 변조에 의해 생겨나는 전하밀도의 비균일성에 의해 생겨나는 것으로 해석된다.

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