Anatomy of Skyrmionic Textures in Magnetic Multilayers

Anatomy of Skyrmionic Textures in Magnetic Multilayers

© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 31(2019), 14 vom: 01. Apr., Seite e1807683
1. Verfasser: Li, Wenjing (VerfasserIn)
Weitere Verfasser: Bykova, Iuliia, Zhang, Shilei, Yu, Guoqiang, Tomasello, Riccardo, Carpentieri, Mario, Liu, Yizhou, Guang, Yao, Gräfe, Joachim, Weigand, Markus, Burn, David M, van der Laan, Gerrit, Hesjedal, Thorsten, Yan, Zhengren, Feng, Jiafeng, Wan, Caihua, Wei, Jinwu, Wang, Xiao, Zhang, Xiaomin, Xu, Hongjun, Guo, Chenyang, Wei, Hongxiang, Finocchio, Giovanni, Han, Xiufeng, Schütz, Gisela
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2019
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article X-ray ptychography imaging resonant elastic X-ray scattering skyrmion spin texture
Beschreibung
Zusammenfassung:© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Room temperature magnetic skyrmions in magnetic multilayers are considered as information carriers for future spintronic applications. Currently, a detailed understanding of the skyrmion stabilization mechanisms is still lacking in these systems. To gain more insight, it is first and foremost essential to determine the full real-space spin configuration. Here, two advanced X-ray techniques are applied, based on magnetic circular dichroism, to investigate the spin textures of skyrmions in [Ta/CoFeB/MgO]n multilayers. First, by using ptychography, a high-resolution diffraction imaging technique, the 2D out-of-plane spin profile of skyrmions with a spatial resolution of 10 nm is determined. Second, by performing circular dichroism in resonant elastic X-ray scattering, it is demonstrated that the chirality of the magnetic structure undergoes a depth-dependent evolution. This suggests that the skyrmion structure is a complex 3D structure rather than an identical planar texture throughout the layer stack. The analyses of the spin textures confirm the theoretical predictions that the dipole-dipole interactions together with the external magnetic field play an important role in stabilizing sub-100 nm diameter skyrmions and the hybrid structure of the skyrmion domain wall. This combined X-ray-based approach opens the door for in-depth studies of magnetic skyrmion systems, which allows for precise engineering of optimized skyrmion heterostructures
Beschreibung:Date Completed 05.04.2019
Date Revised 30.09.2020
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1521-4095
DOI:10.1002/adma.201807683