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Transport-magnetism Correlation and Colossal Magnetoresistance in Mixed-valent Manganites

机译:混合价锰矿中的输运磁相关性和大磁阻

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摘要

A phenomenological model based on phase separation between ferromagnetic metallic and paramagnetic insulating domains was applied to analyze the electrical transport and colossal magnetoresistance for mixed-valent manganites of RE_(2/3) AE_(1/3) MnO_3. The results show that the model can yield results in agreement with experimental observations in these manganites. The present approach provides a simple picture to visualize the reason, that the temperature dependence of resistance (with and without applied magnetic fields) in these compounds has the peculiar shape, without invoking any complicated concept.
机译:应用基于铁磁金属和顺磁绝缘域之间相分离的现象学模型,分析了RE_(2/3)AE_(1/3)MnO_3的混合价锰铁矿的电输运和巨磁阻。结果表明,该模型可以得到与这些锰矿中的实验观察结果一致的结果。本方法提供了一张简单的图片来可视化其原因,即这些化合物中电阻(具有和不具有施加的磁场)的温度依赖性具有独特的形状,而无需调用任何复杂的概念。

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