Abstract
Abstract Electrical transport properties of high-T c Nd2−xCexCuO4 single-crystal thin films were investigated to reveal the conduction mechanism near the superconductor-insulator transition. We find that two different types of localized state exist in the insulator side: one shows typical behaviour or weak localization and the other is the variable-range-hopping (VRH) conduction type. We claim this to be a new type of VRH conduction process with interlayer hopping by Cooper pairs.
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