Co/Pt多层纳米点中Skyrmion团簇的振荡
Oscillations of skyrmion clusters in Co/Pt multilayer nanodots
摘要:
在这项工作中,我们研究了在多层纳米点的skyrmion核心的振荡作为系统中的skyrmion托管的数量的函数。当纳米点中的所有skyrmion具有相同的核心半径时,并且在施加垂直自旋极化电流之后,发生朝向平衡配置的弛豫过程,该平衡配置伴随着skyrmion核心的相干阻尼振荡,其频率取决于存在于纳米点中的skyrmion的数量。此外,我们发现振荡频率与系统的总能量直接相关。
英文摘要:
In this work we study the oscillations of the skyrmion cores in a multilayer nanodot as a function of the number of skyrmions hosted in the system. When all the skyrmions in the nanodot have the same core radius, and after applying a perpendicular spin-polarized current, a relaxation process takes place towards an equilibrium configuration that is accompanied by coherent damped oscillations of the skyrmion cores, whose frequency depends on the number of skyrmions present in the nanodot. Additionally, we found that the oscillation frequency is directly related to the total energy of the system.
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