铁磁性的Stoner-Wohlfarth模型：动力学和统计性质
The Stoner-Wohlfarth model of Ferromagnetism: Dynamic and Statistical properties
摘要：
单畴磁性颗粒（称为斯通纳粒子）中的磁状态变化或反转的物理学从基本观点和应用观点来看都是有趣的。磁化的变化可以用外部施加的磁场的特定时间变化来微调。它也可以在非常低的温度下通过量子隧穿和在更高的温度下通过热激发自然发生（不施加场）。在诸如信息的高密度读取或写入、自旋电子学、量子信息和量子通信系统的技术应用中，寻求改变磁化的最佳（通常最短）时间以及最小的施加磁场。这项工作审查的磁化强度变化与时间相关的字段和temperature，并讨论了所需的时间来改变的磁化强度作为一个功能的控制参数选择，温度和材料参数。
英文摘要：
The physics of magnetic state change or reversal in single domain magnetic grains (called Stoner particles) is interesting from the fundamental as well as the applied points of view. A change in magnetization can be finely tuned with a specific time variation o f an externally applied magnetic field. It may also occur naturally (without application of a field) at very low tempe rature with quantum tunneling and at higher temperature with thermal excitation. The optimal (usually shortest) time altering the magn etisation along with the smallest applied magnetic field are sought in technological applications s uch as high-density reading or writing of information, spintronics, quantum inform ation and quantum communication systems. This work reviews the magnetization change with a time dependent field and tem perature and discusses the time it takes to alter the magnetization as a function of the control parameter chosen, temperature and material parameters.
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