Abstract Magnetic skyrmions and skyrmioniums are exotic magnetic configurations that have several potential applications in Spintronics. In this work, using micromagnetic simulations, we show that it is possible to create metastable skyrmions and skyrmioniums in an isolated cobalt nanodisk, that has as its minimum energy configuration a single domain with perpendicular magnetization. First, we have determined the ground state of the nanodisk and the frequencies of the spin wave modes of skyrmions and skyrmioniums for different values of perpendicular uniaxial anisotropy constant K z and Dzyaloshinskii-Moriya exchange constant D int . Next, in order to create a skyrmion or skyrmionium, we have applied an oscillating perpendicular magnetic field with a frequency equal to that of the spin wave modes. Our results show that it is possible to switch from single domain to skyrmion or skyrmionium, tuning parameters such as the intensity of the applied perpendicular magnetic field, and its duration.

中文翻译：

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使用振荡垂直磁场创建斯格明子和斯格明子

摘要 磁性斯格明子和斯格明子是奇异的磁性配置，在自旋电子学中有几个潜在的应用。在这项工作中，使用微磁模拟，我们表明可以在孤立的钴纳米盘中创建亚稳态斯格明子和斯格明子，其最小能量配置是具有垂直磁化的单个域。首先，我们已经确定了纳米盘的基态和斯格明子和斯格明子的自旋波模式的频率，垂直单轴各向异性常数 K z 和 Dzyaloshinskii-Moriya 交换常数 D int 的不同值。接下来，为了创建斯格明子或斯格明子，我们施加了一个振荡垂直磁场，其频率等于自旋波模式的频率。