Enhancement of the Superconducting Transition Temperature by Ion Implantation in Aluminium Thin Films
Selected ions have been implanted at room temperature into thin aluminium films. The superconducting transition temperature TC has been measured and was found to depend on implanted ion species and ion concentration. The largest increase in TC was found for atoms which have large size factors and electronegativity values. The TC behaviour, as observed for aluminium based ion implanted alloys differs considerably from results observed for some conventionally prepared alloys. Heavy ion radiation damage was found to affect TC only slightly and an increase of TC from 1.20 to 1.21 K has been observed.
KeywordsSuperconducting Transition Temperature Size Factor Aluminium Thin Film Contact Arrangement Thick Aluminium Layer
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