• 文献标题:   Enhanced intervalley scattering in artificially stacked double-layer graphene
  • 文献类型:   Article
  • 作  者:   IQBAL MZ, KELEKCI O, IQBAL MW, JIN XZ, HWANG CY, EOM JH
  • 作者关键词:   graphene, doublelayer, weak localization, intervalley scattering
  • 出版物名称:   NEW JOURNAL OF PHYSICS
  • ISSN:   1367-2630
  • 通讯作者地址:   Sejong Univ
  • 被引频次:   11
  • DOI:   10.1088/1367-2630/16/8/083020
  • 出版年:   2014

▎ 摘  要

We fabricated artificially stacked double-layer graphene by sequentially transferring graphene grown by chemical vapor deposition. The double-layer graphene was characterized by Raman spectroscopy and transport measurements. A weak localization effect was observed for different charge carrier densities and temperatures. The obtained intervalley scattering rate was unusually high compared to normal Bernal-stacked bilayer or single-layer graphene. The sharp point defects, local deformation, or bending of graphene plane required for intervalley scattering from one Dirac cone to another seemed to be enhanced by the artificially stacked graphene layers.