空中骑兵
凝聚态物理
基态
领域(数学)
纳米结构
对称(几何)
磁场
航程(航空)
工作(物理)
磁化
物理
材料科学
纳米技术
几何学
量子力学
数学
复合材料
纯数学
作者
Ryan A. Pepper,Marijan Beg,David Cortés‐Ortuño,Thomas Kluyver,Marc-Antonio Bisotti,R. Carey,Mark Vousden,Maximilian Albert,Weiwei Wang,Ondřej Hovorka,Hans Fangohr
摘要
Recent studies have demonstrated that skyrmionic states can be the ground state in thin-film FeGe disk nanostructures in the absence of a stabilising applied magnetic field. In this work, we advance this understanding by investigating to what extent this stabilisation of skyrmionic structures through confinement exists in geometries that do not match the cylindrical symmetry of the skyrmion—such as squares and triangles. Using simulation, we show that skyrmionic states can form the ground state for a range of system sizes in both triangular and square-shaped FeGe nanostructures of 10 nm thickness in the absence of an applied field. We further provide data to assist in the experimental verification of our prediction; to imitate an experiment where the system is saturated with a strong applied field before the field is removed, we compute the time evolution and show the final equilibrium configuration of magnetization fields, starting from a uniform alignment.
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