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| 1 | 基于符号回归方法探索磁性斯格明子结构近似解析式显示文摘磁性斯格明子是一种非平庸的拓扑磁结构,它能够在具有Dzyaloshinskii-Moriya(DM)相互作用的手性磁体中稳定存在,其静态以及动态特性与其结构特征息息相关.然而,一般情况下斯格明子结构解析式并不存在.因此,许多研究者给出了近似解析式.本文介绍了使用符号回归算法探索磁性斯格明子结构解析式的新方法,在考虑DM相互作用和外部磁场对磁性斯格明子结构的影响下,使用符号回归算法得到了两个较为合适的近似解析式,其适用范围与占主导地位的相互作用有关.研究结果验证了符号回归算法在探索磁性斯格明子结构解析式的强大能力,为磁结构的解析式探索提供了新思路. | 史猛 王伟伟 杜海峰 | 2024 | 物理学报2024，73，1： | 0 |
| 2 | Magnetic soliton confinement and discretization effects in Cr_(1/3)TaS_(2)nanoflakes显示文摘Topological spin textures have been considered very promising for emerging magnetic memory applications.Recently,Cr_(1/3)TaS_(2)(CTS),a layered magnetic material,has been demonstrated to be a chiral helimagnet,and onedimensional magnetic solitons have been observed via Lorentz transmission electron microscopy.In this paper,we demonstrated the magnetic soliton confinement and discretization effects of CTS through the magneto transport measurements on the samples of different thicknesses. | Chen-Hui Zhang Hanin Algaidi Peng Li Ye Yuan Xi-Xiang Zhang | 2022 | Rare Metals2022，41，9： | 0 |
| 3 | Robust interface-induced unusual anomalous Hall effect in Mn_(3)Sn/Pt bilayers显示文摘Interface-driven magnetic phenomena related to spin-orbit coupling and intrinsic symmetry breaking are of great significance to the development of spintronics materials and devices.Mn_(3)Sn is a natural antiferromagnetic material with a non-collinear magnetic structure,and its anomalous Hall effect(AHE)has been reported to have high crystal anisotropy and temperature dependent behaviors.Here,a large unusual anomalous Hall effect(UAHE)in the(0001)c-axis orientation Mn_(3)Sn/Pt bilayers in the whole temperature range from 5 to 300 K is reported,which is absent in single MnSn film. | Jun-Jie Liu Kang-Kang Meng Ji-Kun Chen Yong Wu Jun Miao Xiao-Guang Xu Yong Jiang | 2022 | Rare Metals2022，41，9： | 0 |
| 4 | Elongation of skyrmions by Dzyaloshinskii-Moriya interaction in helimagnetic films显示文摘Distortion of skyrmions arouses much attention recently due to the exotic topologic al and dynamic properties.Investigating the formation mechanism and dynamical behavior of the deformed skyrmions promotes practical spintronic applications.Elongation,as a typical form of deformation,has been discovered both in experiments and in theories.However,the intrinsic mechanism is absent.Here,the coexistence of zero-field circular and elongated skyrmions in helimagnetic films is observed.The elongated skyrmions,which are determined by the intrinsic Dzyaloshinskii-Moriya interaction(DMI),carry the same topological charge as the circular ones and show the skyrmion Hall effect.Currentdriven dynamics reveal again the significant role of the intrinsic DMI playing in the skyrmion elongation. | Ying-Ying Dai Han Wang Teng Yang Adekunle O.Adeyeye Zhi-Dong Zhang | 2022 | Rare Metals2022，41，9： | 0 |
| 5 | Skyrmion-(non)crystal structure stabilized by dipolar interaction显示文摘We report a numerical study on the role of longrange dipolar interaction played on the creation and stabilization of skyrmion-(non)crystal structure in chiral ferromagnetic thin films without any anisotropies,based on a Monte-Carlo simulation method.With the increase of external magnetic field,the microscopic spin configuration is transformed from a spin-spiral stripe or labyrinth structure,depending on the strength of dipolar interaction,into a skyrmion-(non)crystal structure,and then into a skyrmiongas structure,and finally into a ferromagnetic state.Interestingly,with the increase of dipolar interaction,the skyrmion-crystal structure evolves from a triangular arrangement into a square arrangement with the change of skyrmion shape from circle to square.For larger dipolar interactions,the skyrmion-crystal structure loses the regular arrangements and the skyrmions,remaining topological,exhibit different shapes and sizes and squeeze with each other,whose distributions are analogous to a non-crystal structure.Therefore,different skyrmion-(non)crystal structures are stabilized in different ranges of dipolar interactions,which further promotes the applications of skyrmions as non-volatile information carriers. | Ming-Xiu Sui Yong Hu | 2022 | Rare Metals2022，41，9： | 0 |
| 6 | Discovery of strong bulk Dzyaloshinskii-Moriya interaction in composition-uniform centrosymmetric magnetic single layers显示文摘Dzyaloshinskii-Moriya interaction(DMI)is the key ingredient of chiral spintronic phenomena and the emerging technologies based on such phenomena.A nonzero DMI usually occurs at magnetic interfaces or within non-centrosymmetric single crystals.Here,we report the observation of a strong unexpected DMI within a centrosymmetric polycrystalline ferromagnet that has neither a crystal inversion symmetry breaking nor a composition gradient.This DMI is a bulk effect,increases with the thickness of the magnetic layer,and is insensitive to the symmetry of the interfaces or the neighboring materials.We observe a total DMI strength that is a factor of>2 greater than the highest interfacial DMI in the literature.This DMI most likely arises from the strong spin-orbit coupling,strong orbital hybrization,and a“hidden”long-range asymmetry in the material.Our discovery of the strong unconventional bulk DMI in centrosymmetric,composition-uniform magnetic single layers provides fundamental building blocks for the emerging field of spintronics and will stimulate the exploitation of unconventional spin-orbit phenomena in a wide range of materials. | Lijun Zhu David Lujan Xiaoqin Li | 2024 | Science China(Physics,Mechanics & Astronomy)2024，67，2： | 0 |
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