Abstract
Electronic stopping of slow protons in ZnO, (metal and semiconductor phases), , and was investigated experimentally. As a comparison of the resulting stopping cross sections (SCS) to data for and reveals, electronic stopping of slow protons does not correlate with electronic properties of the specific material such as band gap energies. Instead, the oxygen 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.
- Received 14 March 2017
DOI:https://doi.org/10.1103/PhysRevLett.119.163401
© 2017 American Physical Society