Electronic stopping of slow protons in transition and rare earth metals: Breakdown of the free electron gas concept
| Autor: | Peter Bauer, S. Gruber, Marcos V. Moro, Barbara Bruckner, Daniel Primetzhofer, Jiri Duchoslav, R. Steinberger, D. Roth, Maite Alducin, J. I. Juaristi, D. Goebl |
|---|---|
| Přispěvatelé: | Austrian Science Fund, Netherlands Organization for Scientific Research, Fundações de Amparo à Pesquisa (Brasil), Swedish Foundation for Strategic Research |
| Rok vydání: | 2017 |
| Předmět: |
Free electron model
Condensed Matter - Materials Science Materials science Gadolinium Rare earth Tantalum Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences General Physics and Astronomy chemistry.chemical_element 01 natural sciences 010305 fluids & plasmas Condensed Matter::Materials Science chemistry 0103 physical sciences cardiovascular system Density of states Condensed Matter::Strongly Correlated Electrons cardiovascular diseases Atomic physics Nuclear Experiment 010306 general physics |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| Popis: | 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. Financial support of this work by the Austrian Science Fund (FWF-Project No. P22587-N20 and FWFProject No. P25704-N20) is gratefully acknowledged. M. V. M. acknowledges financial support from São Paulo/Brazil funding agency FAPESP under Contract No. FAPESP2013/09105-0. A research infrastructure fellowship of the Swedish Foundation for Strategic Research (SSF) under Contract No. RIF14-0053 supporting accelerator operation is acknowledged. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|