Electronic Stopping of Slow Protons in Transition and Rare Earth Metals: Breakdown of the Free Electron Gas Concept.
The electronic stopping cross sections (SCS) of Ta and Gd for slow protons have been investigated experimentally. The data are compared to the results for Pt and Au to learn how electronic stopping in transition and rare earth metals correlates with features of the electronic band structures. The extraordinarily high SCS observed for protons in Ta and Gd cannot be understood in terms of a free electron gas model, but are related to the high densities of both occupied and unoccupied electronic states in these metals.
Johannes-Kepler Universität Linz, IEP-AOP, Altenbergerstraße 69, A-4040 Linz, Austria.
D
D
Roth
Johannes-Kepler Universität Linz, IEP-AOP, Altenbergerstraße 69, A-4040 Linz, Austria.
B
B
Bruckner
Johannes-Kepler Universität Linz, IEP-AOP, Altenbergerstraße 69, A-4040 Linz, Austria.|Instituto de Física, Universidade de São Paulo, Rua do Matão 1371, 05508-090 São Paulo, Brasil.
M V
MV
Moro
Johannes-Kepler Universität Linz, IEP-AOP, Altenbergerstraße 69, A-4040 Linz, Austria.
S
S
Gruber
Johannes-Kepler Universität Linz, IEP-AOP, Altenbergerstraße 69, A-4040 Linz, Austria.
D
D
Goebl
Donostia International Physics Center DIPC, P. Manuel de Lardizabal 4, 20018 San Sebastián, Spain.|Centro de Física de Materiales CFM/MPC (CSIC-UPV/EHU), P. Manuel de Lardizabal 5, 20018 Donostia-San Sebastián, Spain.|Departamento de Física de Materiales, Facultad de Químicas, Universidad del País Vasco (UPV/EHU), Apartado 1072, 20018 San Sebastián, Spain.
J I
JI
Juaristi
Donostia International Physics Center DIPC, P. Manuel de Lardizabal 4, 20018 San Sebastián, Spain.|Centro de Física de Materiales CFM/MPC (CSIC-UPV/EHU), P. Manuel de Lardizabal 5, 20018 Donostia-San Sebastián, Spain.
M
M
Alducin
Christian Doppler Laboratory for Microscopic and Spectroscopic Material Characterization, Zentrum für Oberflächen- und Nanoanalytik (ZONA), Johannes-Kepler Universität Linz, Altenbergerstraße 69, A-4040 Linz Austria.
R
R
Steinberger
Christian Doppler Laboratory for Microscopic and Spectroscopic Material Characterization, Zentrum für Oberflächen- und Nanoanalytik (ZONA), Johannes-Kepler Universität Linz, Altenbergerstraße 69, A-4040 Linz Austria.
J
J
Duchoslav
Institutionen för Fysik och Astronomi, Uppsala Universitet, Box 516, S-751 20 Uppsala, Sweden.
D
D
Primetzhofer
Johannes-Kepler Universität Linz, IEP-AOP, Altenbergerstraße 69, A-4040 Linz, Austria.|Donostia International Physics Center DIPC, P. Manuel de Lardizabal 4, 20018 San Sebastián, Spain.
P
P
Bauer