Bulletin of the American Physical Society
APS March Meeting 2021
Volume 66, Number 1
Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session A40: Skyrmions in Two Dimensional Systems
8:00 AM–10:48 AM,
Monday, March 15, 2021
Sponsoring
Units:
GMAG DMP
Chair: Lisa DeBeer-Schmitt, Oak Ridge National Lab
Abstract: A40.00002 : Isolated zero-field magnetic skyrmions in heterogeneous multilayer films stabilized by interlayer exchange coupling
8:36 AM–8:48 AM
Live
Presenter:
Xiaoye Chen
(Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR))
Authors:
Xiaoye Chen
(Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR))
Tommy Tai
(Cavendish Laboratory, University of Cambridge)
Hui Ru Tan
(Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR))
Hang Khume Tan
(Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR))
Xuan Min Cheng
(Department of Physics, National University of Singapore)
Pin Ho
(Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR))
Anjan Soumyanarayanan
(Department of Physics, National University of Singapore)
In this work, we design heterogeneous multilayers with two adjoining functional stacks with tunable interlayer exchange coupling (IEC)4,5. Using magnetic force microscopy (MFM) and Lorentz transmission electron microscopy (LTEM), we investigate the evolution of magnetic textures with varying IEC as well as applied external field. Crucially, we show that isolated magnetic skyrmions could be stabilized within a finite IEC window. This work establishes and extends the use of IEC as a means of stabilizing ZF skyrmions and paves the path to skyrmion-based devices.
1. Fert, A. et al. Nat. Rev. Mater. 2, (2017).
2. Soumyanarayanan, A. et al. Nat. Mater. 16, (2017).
3. Ho, P. et al. Phys. Rev. Appl. 11, 024064 (2019).
4. Chen, G. et al. Appl. Phys. Lett. 106, 242404 (2015).
5. Legrand, W. et al. Nat. Mater. 1–9 (2019)
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