Current-driven dynamics of skyrmion bubbles in achiral uniaxial magnets  

作　　者：Yaodong Wu Jialiang Jiang Jin Tang 吴耀东;蒋佳良;汤进(School of Physics and Materials Engineering,Hefei Normal University,Hefei 230601,China;School of Physics and Optoelectronics Engineering Science,Anhui University,Hefei 230601,China;Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions,High Magnetic Field Laboratory,HFIPS,Chinese Academy of Sciences,Hefei 230031,China)

机构地区：[1]School of Physics and Materials Engineering,Hefei Normal University,Hefei 230601,China [2]School of Physics and Optoelectronics Engineering Science,Anhui University,Hefei 230601,China [3]Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions,High Magnetic Field Laboratory,HFIPS,Chinese Academy of Sciences,Hefei 230031,China

出　　处：《Chinese Physics B》2022年第7期554-559,共6页中国物理B（英文版）

基　　金：the National Natural Science Foundation of China(Grant Nos.12174396 and 12104123)。

摘　　要：We report dynamics of skyrmion bubbles driven by spin-transfer torque in achiral ferromagnetic nanostripes using micromagnetic simulations.In a three-dimensional uniaxial ferromagnet with a quality factor that is smaller than 1,the skyrmion bubble is forced to stay at the central nanostripe by a repulsive force from the geometry border.The coherent motion of skyrmion bubbles in the nanostripe can be realized by increasing the quality factor to~3.8.Our results should propel the design for future spintronic devices such as artificial neural computing and racetrack memory based on dipolestabilized skyrmion bubbles.

关 键 词：skyrmion bubbles dynamic motion artificial neural computing 

分 类 号：O469[理学—凝聚态物理]