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arXiv 2408.11206cond-mat.str-el
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基于动量分辨自旋相互作用的磁性斯格明子晶体与多重-Q态的稳定机制

Stabilization mechanisms of magnetic skyrmion crystal and multiple-$Q$ states based on momentum-resolved spin interactions

Satoru Hayami, Ryota Yambe

AI总结:

本文综述多重-Q态的稳定机制,强调动量空间微观自旋相互作用,并展示动量分辨自旋模型对理解、预测多种拓扑自旋晶体及重现实验磁相图的作用。

摘要:

以磁性斯格明子晶体和刺猬晶体为代表的多重-Q态,因其非传统物理性质近年来得到广泛研究。迄今为止,承载多重-Q态的材料已在多种晶格结构和化学成分中被观测到,这表明存在诱导多重-Q态的丰富稳定机制。我们综述了此类多重-Q态稳定机制研究的最新进展,重点关注动量空间中的微观自旋相互作用。我们表明,有效的动量分辨自旋模型是一个典范模型,不仅可用于理解各种多重-Q态的微观起源,还可用于探索更多具有拓扑性质的奇异多重-Q态。我们介绍了实现斯格明子数为一和二的磁性斯格明子晶体、刺猬晶体、麦纫-反麦纫晶体、磁泡晶体及其他多重-Q态的若干关键要素。我们还综述了该有效自旋模型可用于高效重现实验中的磁相图。

英文摘要:

Multiple-$Q$ states as represented by a magnetic skyrmion crystal and hedgehog crystal have been extensively studied in recent years owing to their unconventional physical properties. The materials hosting multiple-$Q$ states have been so far observed in a variety of lattice structures and chemical compositions, which indicates rich stabilization mechanisms inducing the multiple-$Q$ states. We review recent developments in the research of the stabilization mechanisms of such multiple-$Q$ states with an emphasis on the microscopic spin interactions in momentum space. We show that an effective momentum-resolved spin model is a canonical model for not only understanding the microscopic origin of various multiple-$Q$ states but also exploring further exotic multiple-$Q$ states with topological properties. We introduce several key ingredients to realize the magnetic skyrmion crystal with the skyrmion numbers of one and two, hedgehog crystal, meron-antimeron crystal, bubble crystal, and other multiple-$Q$ states. We also review that the effective spin model can be used to reproduce the magnetic phase diagram in experiments efficiently.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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