Energy loss of charged particles moving parallel to a magnesium surface

Details Energy loss of charged particles moving parallel to a magnesium surface Energy loss of charged particles moving parallel to a magnesium surface

2008-10-03

arxiv.org/abs/0810.0629v1

Phys. Rev. B 78, 155428 (2008)

Physics

Condensed Matter

Materials Science

7 pages, 3 figures. To appear in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.78.155428

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.

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