Measurements of resistive transitions, critical fields, and magnetoconductance as a function of increasing normal-state sheet resistance RN reveal the systematics of a pronounced change from superconducting to insulating behavior in thin InInOₓ composite films. With increasing RN, a rapid suppression of the transition temperature together with a decreasing critical-field slope parameter are observed. These results are modeled using a pair-breaking formalism in which the pair-breaking rate is found to be proportional to RN and independent of temperature.
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Hebard et al. (1984) studied this question.
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