Abstract
Superconducting simple cubic Te100−x Au x films (10<x<90) were produced by He+-irradiation at low temperatures as well as at room temperature. After low temperature irradiation the as-irradiated disordered samples forx<60 at % Au are in a semiconducting state which becomes unstable at about 230 K, and then transform into the s.c. superconducting phase. The resistivity of the s.c. phase displays a negative temperature coefficient for residual resistivity values larger than 100 μΩ cm. In comparison to “splat cooled” foils, the s.c. Te—Au phase in the He+-irradiated films is more homogeneous. The observed variation of the transition temperature to the superconducting state with Au content is explained as an interaction of the Fermi-surface with several Bragg-planes.
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Meyer, J.D., Stritzker, B. Superconductivity in simple cubic Te—Au alloys produced by ion irradiation. Z Physik B 36, 47–56 (1979). https://doi.org/10.1007/BF01333953
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DOI: https://doi.org/10.1007/BF01333953