Energy Transfer between Open-Shell Species and Metal Surfaces
نویسندگان
چکیده
It is shown that the electronic friction between a metallic surface and an open-shell atom or molecule moving perpendicularly to it can be substantially enhanced under experimentally interesting conditions, due to the involvement of the Kondo or correlated mixed-valent state. The region of large friction is shifted from the point where the adsorbate resonance crosses the Fermi level to the point where the position-dependent Kondo temperature is of the order of the physical electron-temperature. In addition, there is strong temperature and velocity dependence, along with the breakdown of the local friction approximation. Nevertheless the strong frictions persist for reasonable exper-
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