Two recently developed methods of modelling chiral magnetic soliton elliptical instability are applied in two novel scenarios, the tilted ferromagnetic phase of chiral magnets dominated by easy-plane anisotropy and the general case of the chiral magnet with tilted applied field and arbitrary uniaxial anisotropy. In the former case, the analytical predictions are found to exactly match previous numerical results. In the latter case, instability of isolated chiral skyrmions has not yet been studied, although the predictions correspond interestingly to previous numerical investigation of the phase diagram.
Modelling spin waves in noncollinear antiferromagnets: spin-flop states, spin spirals, skyrmions and antiskyrmions
反铁磁材料中的自旋波在下一代磁振子技术中具有巨大的潜力。然而，它们的性质及其对基态反铁磁结构类型的依赖性仍然是一个悬而未决的问题。在这里，我们研究理论上的自旋波在一维和二维模型系统的重点是非共线反铁磁纹理，如自旋螺旋和相反的拓扑电荷skyrmions。我们特别解决了最近在体反铁磁体$α$ -$\text{Cu}_2\text{V}_2\text{O}_7$中利用非弹性中子散射实验测量的非互易自旋激发[Phys.\修订版本\ Lett. \textbf{119}，047201（2017）]，其中我们帮助表征检测到的自旋波模式的性质。此外，我们讨论了Dzyaloshinskiii-Moriya相互作用如何提高反铁磁物质中自旋波模式的简并度，类似于电子Rashba分裂。本文研究了反铁磁自旋螺旋系统和Skyrmion系统中的自旋波激发，讨论了它们的非弹性散射谱特征。我们证明了在某些反铁磁体中，可以用各向同性的Dzyaloshinskiii-Moriya相互作用获得反克尔米离子。
Switching magnetic texture via in-plane magnetic field in noncentrosymmetric dipolar magnets: From skyrmions to antiskyrmions and nontopological magnetic bubbles
Observation by SANS and PNR of pure Néel-type domain wall profiles and skyrmion suppression below room temperature in magnetic [Pt/CoFeB/Ru]$_{10}$ multilayers
Beyond conventional skyrmions in synthetic antiferromagnets
University of Glasgow（格拉斯哥大学）；Swiss Federal Laboratories for Material Science and Technology (Empa)（瑞士联邦材料科学与技术研究所）；National Physical Laboratory（英国国家物理实验室）；University of California, Santa Cruz（加州大学圣克鲁兹分校）；Politecnico di Bari（巴里理工大学）；University of Leeds（利兹大学）；Lawrence Berkeley National Laboratory（劳伦斯伯克利国家实验室）
