Normal to superconducting transition times for thin films of tin and indium
Bower, George L.
Simila, Kenneth R.
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The transition time from the resistive to the superconducting state for thin films of tin and indium was investigated under a variety of conditions. The purpose was to extend previous work which had shown that,, when a thin film is switched to the normal state by a current pulse*, the time required for the film to return to the superconducting state can sometimes be decreased by increasing the pulse amplitude. Thus the transition time is not a continuously increasing function of the current used to switch the film to the resistive state and hence cannot be entirely explained by joule heating and subsequent cooling by conventional heat transfer processes, The effects on the transition time produced by temperature*, switching pulse duration, magnetic field and a silicon monoxide coating on the film were investigated.
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