Formation and annihilation of multi-antiskyrmion defects during skyrmion nucleation

被引:5
作者
Han, L. [1 ]
Song, C. [1 ]
Pan, F. [1 ]
机构
[1] Tsinghua Univ, Sch Mat Sci & Engn, Key Lab Adv Mat, MOE, Beijing 100084, Peoples R China
基金
国家重点研发计划; 中国国家自然科学基金;
关键词
TEMPERATURE MAGNETIC SKYRMIONS; ROOM-TEMPERATURE; STABILITY; DYNAMICS;
D O I
10.1063/5.0027351
中图分类号
O59 [应用物理学];
学科分类号
摘要
Magnetic skyrmions and antiskyrmions are intriguing topological defects in spin textures. A single-antiskyrmion defect would form and collapse to straightforwardly complete the topological transition for the nucleation of a skyrmion phase from a ferromagnetic background. Here, a novel multi-antiskyrmion defects-driven skyrmion nucleation mechanism is investigated in both the ferromagnetic single layer and synthetic antiferromagnetic trilayers with the spin-polarized current stimuli. The multi-antiskyrmion defects mechanism needs lower nucleation activation energy than the single-antiskyrmion defect mechanism and brings about intriguing fluctuations in topological charge. The multi-antiskyrmion defects mechanism can survive even at room temperature and is robust against simulation parameters. Our finding not only unravels an unprecedented skyrmion nucleation process but also provides a platform for investigating antiskyrmions as topological defects during topological transition.
引用
收藏
页数:9
相关论文
共 51 条
[1]  
[Anonymous], 2016, NEWS CE DRY REFORMIN, V94, P30
[2]   Chiral symmetry breaking in magnetic thin films and multilayers -: art. no. 037203 [J].
Bogdanov, AN ;
Rössler, UK .
PHYSICAL REVIEW LETTERS, 2001, 87 (03) :37203-1
[3]   Room-temperature chiral magnetic skyrmions in ultrathin magnetic nanostructures [J].
Boulle, Olivier ;
Vogel, Jan ;
Yang, Hongxin ;
Pizzini, Stefania ;
Chaves, Dayane de Souza ;
Locatelli, Andrea ;
Mentes, Tevfik Onur ;
Sala, Alessandro ;
Buda-Prejbeanu, Liliana D. ;
Klein, Olivier ;
Belmeguenai, Mohamed ;
Roussigne, Yves ;
Stashkevich, Andrey ;
Cherif, Salim Mourad ;
Aballe, Lucia ;
Foerster, Michael ;
Chshiev, Mairbek ;
Auffret, Stephane ;
Miron, Ioan Mihai ;
Gaudin, Gilles .
NATURE NANOTECHNOLOGY, 2016, 11 (05) :449-+
[4]   Field-free deterministic ultrafast creation of magnetic skyrmions by spin-orbit torques [J].
Buettner, Felix ;
Lemesh, Ivan ;
Schneider, Michael ;
Pfau, Bastian ;
Guenther, Christian M. ;
Hessing, Piet ;
Geilhufe, Jan ;
Caretta, Lucas ;
Engel, Dieter ;
Krueger, Benjamin ;
Viefhaus, Jens ;
Eisebitt, Stefan ;
Beach, Geoffrey S. D. .
NATURE NANOTECHNOLOGY, 2017, 12 (11) :1040-+
[5]   Realization of Isolated and High-Density Skyrmions at Room Temperature in Uncompensated Synthetic Antiferromagnets [J].
Chen, Ruyi ;
Gao, Yang ;
Zhang, Xichao ;
Zhang, Ruiqi ;
Yin, Siqi ;
Chen, Xianzhe ;
Zhou, Xiaofeng ;
Zhou, Yongjian ;
Xia, Jing ;
Zhou, Yan ;
Wang, Shouguo ;
Pan, Feng ;
Zhang, Ying ;
Song, Cheng .
NANO LETTERS, 2020, 20 (05) :3299-3305
[6]   Electric field control of Neel spin-orbit torque in an antiferromagnet [J].
Chen, Xianzhe ;
Zhou, Xiaofeng ;
Cheng, Ran ;
Song, Cheng ;
Zhang, Jia ;
Wu, Yichuan ;
Ba, You ;
Li, Haobo ;
Sun, Yiming ;
You, Yunfeng ;
Zhao, Yonggang ;
Pan, Feng .
NATURE MATERIALS, 2019, 18 (09) :931-+
[7]  
Donahue M. J., 1999, Technical Report, P83, DOI 10.6028/NIST.IR.6376
[8]   Perspective: Magnetic skyrmions-Overview of recent progress in an active research field [J].
Everschor-Sitte, K. ;
Masell, J. ;
Reeve, R. M. ;
Klaeui, M. .
JOURNAL OF APPLIED PHYSICS, 2018, 124 (24)
[9]   Skyrmion production on demand by homogeneous DC currents [J].
Everschor-Sitte, Karin ;
Sitte, Matthias ;
Valet, Thierry ;
Abanov, Artem ;
Sinova, Jairo .
NEW JOURNAL OF PHYSICS, 2017, 19
[10]   Skyrmions on the track [J].
Fert, Albert ;
Cros, Vincent ;
Sampaio, Joao .
NATURE NANOTECHNOLOGY, 2013, 8 (03) :152-156