Abstract

Several complex theories explaining the phenomenon of negative magnetoresistance (NMR) are discussed, observed in insulating diluted granular multilayers Co₈₀Fe₂₀(t)|Al₂O₃. In fact, this investigation is re-analyzing the experimental measurements of Co₈₀Fe₂₀ with low nominal thickness t = 0.7 nm of granular layers obtained earlier. Two theories such as quantum interference model and localized magnetic moments model are confronted with experimental measurements in order to provide physical explanations to NMR phenomenon.

中文翻译：

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稀颗粒Co 80 Fe 20（t）| Al 2 O 3多层薄膜中的负磁阻现象

摘要

在绝缘稀颗粒状多层Co ₈₀ Fe ₂₀（t）| Al ₂ O _3中观察到了几种解释负磁阻（NMR）现象的复杂理论。实际上，这项研究正在重新分析具有较早获得的低公称厚度t = 0.7 nm的颗粒层的Co ₈₀ Fe ₂₀的实验测量值。为了对NMR现象提供物理解释，对量子干涉模型和局域磁矩模型这两种理论进行了实验测量。