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Magnetic soliton confinement and discretization effects in Cr1/3TaS2 nanoflakes

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摘要

拓扑自旋结构在新型磁存储方面有着广阔的应用前景。最近, 层状磁性材料Cr1/3TaS2 (CTS) 被证实是一种手性螺旋磁体, 并且通过洛伦兹电子显微术在该材料中观测到了一维磁孤子。 在本文中, 我们通过测量不同厚度样品的磁输运特性, 证实了CTS 中磁孤子的空间限制与 离散化效应。我们在CTS 纳米片中观测到了磁电阻的回滞和跳跃, 而在块体样品并没有出 现这些现象。在纳米片中, 螺旋磁结构在旋转轴方向上空间受限, 样品所能容纳的磁孤子数 是分立的整数, 且取决于样品厚度。当磁场在垂直于旋转轴方向上不断变化时, 磁孤子数目 只能以整数形式不连续地变化, 从而导致磁电阻产生离散化的跳跃。磁孤子的准粒子特性使 得体系处在分立的不同孤子数状态下时存在能量势垒, 从而导致了磁电阻的回滞现象。我们 的研究结果显示了CTS 在纳米自旋电子学器件领域的巨大潜力。

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Acknowledgments

This work was financially supported by King Abdullah University of Science and Technology (KAUST), Office of Sponsored Research (OSR) under the Award Nos. CRF-2018-3717-CRG7 and CRF-2019-4081-CRG8. P. Li would like to thank the funding support from the National Natural Science Foundation of China (No. 12074056).

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Authors and Affiliations

  1. Physical Science and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia

    Chen-Hui Zhang, Hanin Algaidi & Xi-Xiang Zhang

  2. State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, 610054, China

    Peng Li

  3. Songshan Lake Materials Laboratory, Dongguan, 523808, China

    Ye Yuan

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Zhang, CH., Algaidi, H., Li, P. et al. Magnetic soliton confinement and discretization effects in Cr1/3TaS2 nanoflakes. Rare Met. 41, 3005–3011 (2022). https://doi.org/10.1007/s12598-022-02037-7

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