The thermal stability of atomic-scale skyrmions is of high relevance for potential spintronics applications and validation of theoretical models. We investigated Pd/Fe nanoislands on an Ir(111) substrate as a function of temperature and magnetic field. Utilizing noncollinear magnetoresistance contrast in scanning tunneling microscopy, the thermomagnetic phase space is explored up to 3 T within a temperature range between 1 K to 100 K. Evidence is found for the spin spiral, field-polarized, and fluctuating disordered magnetic phases. Evidence for the presence of atomic-scale skyrmions at up to approximately 80 K is found, irrespective of considerable magnetization dynamics arising from thermal agitation.

中文翻译：

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Pd / Fe / Ir（111）纳米岛中原子尺度天体的温度和磁场依赖性行为

原子级天文离子的热稳定性与潜在的自旋电子学应用和理论模型验证具有高度相关性。我们研究了Ir（111）衬底上的Pd / Fe纳米岛随温度和磁场的变化。在扫描隧道显微镜中利用非共线磁致电阻对比，在1 K至100 K的温度范围内探索了高达3 T的热磁相空间。发现了自旋螺旋，场极化和波动无序磁相的证据。不论热搅拌引起的相当大的磁化动力学如何，都可以找到存在高达约80 K的原子级的天空离子的证据。