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Relaxation Dynamics of Zero-Field Skyrmions over a Wide Temperature Range
Nano Letters ( IF 9.6 ) Pub Date : 2018-11-30 00:00:00 , DOI: 10.1021/acs.nanolett.8b03553 Licong Peng 1, 2, 3 , Ying Zhang 1, 3 , Liqin Ke 3 , Tae-Hoon Kim 3 , Qiang Zheng 4 , Jiaqiang Yan 4 , X.-G. Zhang 5 , Yang Gao 6 , Shouguo Wang 6 , Jianwang Cai 1, 2 , Baogen Shen 1, 2 , Robert J. McQueeney 3 , Adam Kaminski 3 , Matthew J. Kramer 3 , Lin Zhou 3
Nano Letters ( IF 9.6 ) Pub Date : 2018-11-30 00:00:00 , DOI: 10.1021/acs.nanolett.8b03553 Licong Peng 1, 2, 3 , Ying Zhang 1, 3 , Liqin Ke 3 , Tae-Hoon Kim 3 , Qiang Zheng 4 , Jiaqiang Yan 4 , X.-G. Zhang 5 , Yang Gao 6 , Shouguo Wang 6 , Jianwang Cai 1, 2 , Baogen Shen 1, 2 , Robert J. McQueeney 3 , Adam Kaminski 3 , Matthew J. Kramer 3 , Lin Zhou 3
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The promise of magnetic skyrmions in future spintronic devices hinges on their topologically enhanced stability and the ability to be manipulated by external fields. The technological advantages of nonvolatile zero-field skyrmion lattice (SkL) are significant if their stability and reliability can be demonstrated over a broad temperature range. Here, we study the relaxation dynamics including the evolution and lifetime of zero-field skyrmions generated from field cooling (FC) in an FeGe single-crystal plate via in situ Lorentz transmission electron microscopy (L-TEM). Three types of dynamic switching between zero-field skyrmions and stripes are identified and distinguished. Moreover, the generation and annihilation of these metastable skyrmions can be tailored during and after FC by varying the magnetic fields and the temperature. This dynamic relaxation behavior under the external fields provides a new understanding of zero-field skyrmions for their stability and reliability in spintronic applications and also raises new questions for theoretical models of skyrmion systems.
中文翻译：
宽温度范围内零场Skyrmion的弛豫动力学
未来自旋电子器件中的磁天文离子的前景取决于其拓扑结构的增强的稳定性以及可被外部场操纵的能力。如果可以在较宽的温度范围内证明其稳定性和可靠性，则非易失性零场Skyrmion晶格（SkL）的技术优势就非常重要。在这里，我们通过原位洛伦兹透射电子显微镜（L-TEM）研究了FeGe单晶板中由场冷却（FC）产生的零场skyrmions的演化和寿命，其弛豫动力学。识别并区分了三种类型的零场天文和条纹之间的动态切换。此外，可以在FC期间和之后通过改变磁场和温度来调整这些亚稳天生离子的产生和an灭。
更新日期：2018-11-30
中文翻译：
宽温度范围内零场Skyrmion的弛豫动力学
未来自旋电子器件中的磁天文离子的前景取决于其拓扑结构的增强的稳定性以及可被外部场操纵的能力。如果可以在较宽的温度范围内证明其稳定性和可靠性，则非易失性零场Skyrmion晶格（SkL）的技术优势就非常重要。在这里，我们通过原位洛伦兹透射电子显微镜（L-TEM）研究了FeGe单晶板中由场冷却（FC）产生的零场skyrmions的演化和寿命，其弛豫动力学。识别并区分了三种类型的零场天文和条纹之间的动态切换。此外，可以在FC期间和之后通过改变磁场和温度来调整这些亚稳天生离子的产生和an灭。
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