• 文献标题:   Impact of graphene coating on the atom-plate interaction
  • 文献类型:   Article
  • 作  者:   KLIMCHITSKAYA GL, MOSTEPANENKO VM
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW A
  • ISSN:   1050-2947 EI 1094-1622
  • 通讯作者地址:   Russian Acad Sci
  • 被引频次:   16
  • DOI:   10.1103/PhysRevA.89.062508
  • 出版年:   2014

▎ 摘  要

Using the recently proposed quantum electrodynamical formalism, we calculate the Casimir-Polder free energies and forces between the ground-state atoms of Rb, Na, Cs, and He* and the plates made of Au, Si, sapphire, and fused silica coated with a graphene sheet. It is shown that the graphene coating has no effect on the Casimir-Polder interaction for metallic plates, but influences significantly for plates made of dielectric materials. The influence of graphene coating increases with decreasing static dielectric permittivity of the plate material and the characteristic frequency of an atomic dynamic polarizability. Simple analytic expressions for the classical limit of the Casimir-Polder free energy and force between an atom and a graphene-coated plate are obtained. From a comparison with the results of numerical computations, the application region of these expressions is determined.