Electronic Stopping of Slow Protons in Oxides: Scaling Properties

D. Roth, B. Bruckner, G. Undeutsch, V. Paneta, A. I. Mardare, C. L. McGahan, M. Dosmailov, J. I. Juaristi, M. Alducin, J. D. Pedarnig, R. F. Haglund, Jr., D. Primetzhofer, and P. Bauer
Phys. Rev. Lett. 119, 163401 – Published 20 October 2017

Abstract

Electronic stopping of slow protons in ZnO, VO2 (metal and semiconductor phases), HfO2, and Ta2O5 was investigated experimentally. As a comparison of the resulting stopping cross sections (SCS) to data for Al2O3 and SiO2 reveals, electronic stopping of slow protons does not correlate with electronic properties of the specific material such as band gap energies. Instead, the oxygen 2p states are decisive, as corroborated by density functional theory calculations of the electronic densities of states. Hence, at low ion velocities the SCS of an oxide primarily scales with its oxygen density.

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  • Received 14 March 2017

DOI:https://doi.org/10.1103/PhysRevLett.119.163401

© 2017 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & OpticalCondensed Matter, Materials & Applied Physics

Authors & Affiliations

D. Roth1, B. Bruckner1, G. Undeutsch1, V. Paneta2, A. I. Mardare3, C. L. McGahan4, M. Dosmailov5, J. I. Juaristi6,7,8, M. Alducin6,7, J. D. Pedarnig5, R. F. Haglund, Jr.4, D. Primetzhofer2, and P. Bauer1,6

  • 1Johannes-Kepler Universität Linz, IEP-AOP, Altenbergerstraße 69, A-4040 Linz, Austria
  • 2Institutionen för Fysik och Astronomi, Uppsala Universitet, Box 516, S-751 20 Uppsala, Sweden
  • 3Institut für Chemische Technologie Anorganischer Stoffe, Johannes-Kepler Universität Linz, Altenbergerstraße 69, A-4040 Linz, Austria
  • 4Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235, USA
  • 5Institut für Angewandte Physik, Johannes-Kepler Universität Linz, Altenbergerstraße 69, A-4040 Linz, Austria
  • 6Donostia International Physics Center DIPC, P. Manuel de Lardizabal 4, 20018 Donostia-San Sebastián, Spain
  • 7Centro de Física de Materiales CFM/MPC (CSIC-UPV/EHU), P. Manuel de Lardizabal 5, 20018 Donostia-San Sebastián, Spain
  • 8Departamento de Física de Materiales, Facultad de Químicas, Universidad del País Vasco (UPV/EHU), Apartado 1072, 20018 Donostia-San Sebastián, Spain

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Issue

Vol. 119, Iss. 16 — 20 October 2017

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