• 文献标题:   Correlation between charge inhomogeneities and structure in graphene and other electronic crystalline membranes
  • 文献类型:   Article
  • 作  者:   GAZIT D
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW B
  • ISSN:   2469-9950 EI 2469-9969
  • 通讯作者地址:   Univ Washington
  • 被引频次:   32
  • DOI:   10.1103/PhysRevB.80.161406
  • 出版年:   2009

▎ 摘  要

Only one atom thick and not inclined to lattice defects, graphene represents the ultimate crystalline membrane. However, its structure reveals unique features not found in other crystalline membranes, in particular the existence of ripples with wavelength of 100-300 angstrom. Here, I trace the origin of this difference to the free electrons in the membrane. The deformation energy of the lattice creates a coupling between charge fluctuations and the structure, resulting in ripples on the membrane, correlated with charge inhomogeneities. In graphene this mechanism reproduces the experimental result for both charge puddles and ripples.