论文标题
人造自旋冰中的中和中间的热激发
Thermal excitations within and among mesospins in artificial spin ice
论文作者
论文摘要
我们为磁性中辛内外的热激发提供了实验性和数值证据，从而形成了人造自旋冰结构。在低温下，磁化强度的降低和易感性的增加会随温度的升高而观察到，被解释为中间磁质纹理的热波动开始。在升高的温度下，观察到明显的敏感性峰，这与中旋蛋白的热诱导翻转和remanent状态的崩溃有关。波动虽然发生在不同的长度和能量尺度上，但可通过中旋替象的相互作用强度调节。
We provide experimental and numerical evidence for thermal excitations within and among magnetic mesospins, forming artificial spin ice structures. At low temperatures, a decrease in magnetization and increase in susceptibility is observed with increasing temperature, interpreted as an onset of thermal fluctuations of the magnetic texture within the mesospins. At elevated temperatures a pronounced susceptibility peak is observed, related to thermally induced flipping of the mesospins and a collapse of the remanent state. The fluctuations, while occurring at distinct length- and energy-scales, are shown to be tunable by the interaction strength of the mesospins.
