Spontaneous decay in front of a planar surface
  
Spontaneous decay and emission rates for an atom situated at a distance z0 from a planar surface. The rate is normalized to the decay rate in vacuum, Γ0=4ω3|d|2/3c3, where d is the transition dipole. The substrate medium is described by a local dielectric function ε(ω). The surface is allowed to have a surface layer of conductange σ(ω). The option is given to adopt values of this conductance corresponding to graphene, modeled from the model of L. A. Falkovsky, J. Phys.: Conf. Series 129, 012004 (2008).
See details of the theory in   L. A. Blanco and F. J. García de Abajo, Phys. Rev. B 69, 205414 (2004).
Dielectric function ε(ω)

For Drude:
ε(ω)=ε0-ωp2/ω(ω+iη)
ε0 = + i
ωp (eV) =
η (eV) =

Geometry under consideration
Geometry under
consideration

Only decay
Only emission
Both
Surface conductance
σ (Ohm-1m-1) = + i
Graphene:
         EF (eV) =
         Temperature (K) =
Other parameters z0 (nm) = (≥1 nm)
λmin(nm) =     λmax(nm) =