Effects of Ion Beam Irradiation on Nanoscale InOx Cooper-Pair Insulators

Abstract EN

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 InOx 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 InOx films to cause dissolution of this specific insulating state.