论文标题
在铁磁SRRUO中检测手性旋转结构$ _3 $薄膜
Detection of the Chiral Spin Structure in Ferromagnetic SrRuO$_3$ Thin Film
论文作者
论文摘要
Srruo $ _3 $（SRO）薄膜及其异质结构引起了人们的关注，因为最近展示的引人入胜的特性，例如拓扑厅效应和天空。对这些SRO特性的理解至关重要的是对自旋构型的研究。在这里，我们在氧气K-Edge上进行谐振软X射线散射（RSXS），以研究4个单位细胞SRO膜的旋转构型，该膜在单个晶体SRTIO $ _3 $上表现出现。磁场下的RSXS信号（〜0.4 Tesla）清楚地显示了镜面反射周围的磁性二色性模式。 RSXS信号上的模型计算表明，磁性二色性模式源自该SRO薄膜中的Néel型手性自旋结构。我们认为，观察到的SRO系统的自旋结构是了解其有趣的磁性和传输特性的关键信息。
A SrRuO$_3$ (SRO) thin film and its heterostructure have brought much attention because of the recently demonstrated fascinating properties, such as topological Hall effect and skyrmions. Critical to the understanding of those SRO properties is the study of the spin configuration. Here, we conduct resonant soft x-ray scattering (RSXS) at oxygen K-edge to investigate the spin configuration of a 4 unit-cell SRO film that was grown epitaxially on a single crystal SrTiO$_3$. The RSXS signal under a magnetic field (~0.4 Tesla) clearly shows a magnetic dichroism pattern around the specular reflection. Model calculations on the RSXS signal demonstrate that the magnetic dichroism pattern originates from a Néel-type chiral spin structure in this SRO thin film. We believe that the observed spin structure of the SRO system is a critical piece of information for understanding its intriguing magnetic and transport properties.
