100 ~ 340 K宽温区超稳定双克尔米子纳米磁畴中心对称六方磁体
A centrosymmetric hexagonal magnet with superstable biskyrmion magnetic nanodomains in a wide temperature range of 100K to 340K
摘要：
在这里，我们报告的实验发现biskyrmion磁性纳米畴在RT和biskyrmion衍生的拓扑霍尔效应（THE）的中心对称的六角MnNiGa磁体的观察。利用基于强度输运方程（TIE）的相位重建技术，我们建立了双自旋的织构。洛伦兹透射电子显微镜（TEM）和拓扑霍尔效应的结果表明，在我们的材料中，比先前报道的skyrmion托管块体晶体中的biskyrmion相在更宽的温度范围（100 K至~ 340 K）和更大的磁场范围内稳定[1- 3，6]。超宽的工作温度和广泛的材料选择表明了实现基于skyrmion的自旋电子器件的重要进展。
英文摘要：
Here, we report on the experimental discovery of biskyrmion magnetic nanodomains at RT and the observation of a biskyrmion-derived topological Hall effect (THE) in the centrosymmetric hexagonal MnNiGa magnet. Using a phase reconstruction technique based on a transport-of-intensity equation (TIE), we established the texture of the biskyrmion spin. Results from Lorentz transmission electron microscopy (TEM) and the topological Hall effect revealed that the biskyrmion phase is stable over a much wider temperature range (100 K to ~340K) and a larger magnetic field range in our material than in skyrmion-hosting bulk crystals reported previously[1-3,6]. The super-wide operating temperature and the broad range of material options indicate important progress toward the realization of skyrmion-based spintronic devices.
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