@article{EiznerHorovitzHenkel2012,
  author    = {Eizner, E. and Horovitz, Baruch and Henkel, Carsten},
  title     = {Van der waals-casimir-polder interaction of an atom with a composite surface},
  series = {The European physical journal : D, Atomic, molecular, optical and plasma physics},
  volume    = {66},
  journal   = {The European physical journal : D, Atomic, molecular, optical and plasma physics},
  number    = {12},
  publisher = {Springer},
  address   = {New York},
  issn      = {1434-6060},
  doi       = {10.1140/epjd/e2012-30294-x},
  pages     = {11},
  year      = {2012},
  abstract  = {We study the dispersion interaction of the van der Waals and Casimir-Polder (vdW-CP) type between a neutral atom and the surface of a conductor by allowing for nonlocal electrodynamics, i.e. electron diffusion. We consider two models: (i) bulk diffusion, and (ii) diffusion in a surface charge layer. In both cases, we find that the transition to a semiconductor as a function of the conductivity is continuous, unlike the case of a local model. The relevant parameter is the electric screening length and depends on the carrier diffusion constant. We find that for distances comparable to the screening length, vdW-CP data can distinguish between bulk and surface diffusion, hence it can be a sensitive probe for surface states.},
  language  = {en}
}