Dynamical van der Waals atom -surface interaction

Details Dynamical van der Waals atom -surface interaction Dynamical van der Waals atom -surface interaction

2011-01-13

arxiv.org/abs/1101.2621v2

Surface Science, 605(2011)1077

Physics

Condensed Matter

Other Condensed Matter

15 pages,4 figures; corrected abstract,numerical calculations and conclusions

Scientific paper

10.1016/j.susc.2011.10.008

We obtained new nonrelativistic expression for the dynamical van der Waals atom -surface interaction energy of very convenient form for different applications. It is shown that classical result (Ferrell and Ritchie, 1980) holds only for a very slowly moving atom. In general case, the van der Waals atom -surface interaction energy manifests strong nonlinear dependence on velocity and distance. In close vicinity of metal and dielectric surfaces and velocities from 1 to 10 Bohr units the dynamical van der Waals potential proves to be significantly lower that in static case and goes to the static values with increasing distance and (or) decreasing velocity.

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