Energy loss of charged particles moving parallel to a magnesium surface
Fecha
2008-10Autor
García Vergniory, Maia
Silkin, Viatcheslav M.
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Physical Review B 78(15) : (2008) // Article 155428
Resumen
We present it ab initio calculations of the electronic energy loss of charged particles moving outside a magnesium surface, from a realistic description of the one-electron band structure and a full treatment of the dynamical electronic response of valence electrons. Our results indicate that the finite width of the plasmon resonance, which is mainly due to the presence of band-structure effects, strongly modifies the asymptotic behaviour of the energy loss at large distances from the surface. This effect is relevant for the understanding of the interaction between charged particles and the internal surface of microcapillaries.