Li, Qian Yang, Mengmeng Chen, Gong Yoon, Han Gyu Kwon, Hee Young Won, Changyeon Wang, Tianye Hwang, Chanyong Zhang, Xixiang Wu, Yizheng Schmid, Andreas K. Qiu, Ziqiang 2024-01-19T10:33:28Z 2024-01-19T10:33:28Z 2022-10-20 2022-12 1616-301X https://pubs.kist.re.kr/handle/201004/114256 Chiral magnetic domains are topological spin textures in which the Dzyaloshinskii-Moriya interaction assigns a given chirality to the domain walls. Notably, despite rapid progress in chiral magnetic research, one fundamental issue that remains unclear is how the chirality of chiral magnetic domains change as a magnetic field deforms the spin texture. Using spin-polarized low energy electron microscopy, the evolution of Fe/Ni chiral magnetic stripe domains are investigated in single-crystalline Fe/Ni/Cu/Co/Cu(001) multilayers in which the interlayer magnetic coupling between the Co and Fe/Ni films serves as an in-plane magnetic field. Contrary to theoretical works, it is found that the chirality of the Neel walls results in a parallel alignment of the magnetic stripes with the in-plane magnetic field direction. The transformation of chiral Neel walls into achiral Bloch walls can be precisely controlled by tuning the Cu spacer layer thickness. In addition, the domain wall exhibits a spontaneous asymmetry within the in-plane magnetic field, leading to an unbalanced chirality between the left-handed and right-handed Bloch walls. These new results foster a better understanding of the chiral domain properties within a magnetic field. English John Wiley & Sons Ltd. Spontaneous Asymmetry of Chiral Magnetic Domains Within a Magnetic Field Article 10.1002/adfm.202205364 1 Advanced Functional Materials, v.32, no.49 Advanced Functional Materials 32 49 N scie scopus 000865551100001 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article FE FILMS alignment of chiral magnetic stripes interlayer couplings spin polarized low energy electron microscopy transformation of chiral Neel wall