The Influence of Heavy Ion Bombardment on the Superconducting Transition Temperature of Thin Films
Thin layers of the transition metals vanadium, niobium and tantalum have been bombarded with Ne+ ions. Energies and fluences were chosen such that the ions penetrated the layers and that equal amounts of energy lost in nuclear collisions were deposited in the different layers. A strong decrease of the superconducting transition temperature TC after bombardment has been observed and similar relative changes ΔTC/TC occured in V, Nb and Ta. These changes are assigned to the disorder produced on the paths of the penetrating ions. An enhanced decrease in TC was induced in the A-15 compound Nb3Ge by He+ ion irradiation.
KeywordsQuartz Substrate Superconducting Transition Temperature Nuclear Collision Projected Range Fast Neutron Fluences
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