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International Journal of Photoenergy
Volume 2013, Article ID 236823, 8 pages
Research Article

Effects of Ion Beam Irradiation on Nanoscale Cooper-Pair Insulators

1Institute of Electrical Engineering “Nikola Tesla”, 11000 Belgrade, Serbia
2Institute of Nuclear Sciencies “Vinca”, 11000 Belgrade, Serbia
3Faculty of Electrical Engineering, University of Belgrade, 11000 Belgrade, Serbia
4Faculty of Electronic Engineering, University of Niš, 18000 Niš, Serbia

Received 7 April 2013; Accepted 25 May 2013

Academic Editor: Momčilo Pejović

Copyright © 2013 Srdjan Milosavljević et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This paper examines the effects of irradiating indium oxide films of nanoscale thickness by ion beams, when these films are in the Cooper-pair insulator state. Radiation effects are predicted on the basis of Monte Carlo simulations of ion transport. Results of numerical experiments are interpreted within the theoretical model of a Cooper-pair insulator. The study suggests that radiation-induced changes in films exposed to ion beams could significantly alter their current-voltage characteristics and that a transition to a metallic state is possible, due to radiation-induced perturbation of the fine-tuned granular structure. Furthermore, incident and displaced ions can break up enough Cooper pairs in films to cause dissolution of this specific insulating state.