New Frontiers in Nanoscale Magnetism: Towards Three Dimensional Materials and Devices

Abstract

The expansion of nanomagnetism to three dimensions provides exciting opportunities to explore new physical phenomena and opens great prospects to create 3D magnetic devices for green computing technologies [1]. In this talk, I will present some of our recent works dedicated to the investigation of three dimensional artificial magnetic materials, including multilayered and complex-shaped geometries. The talk will give an overview of the new methods we have developed to fabricate [2,3] and characterize [4,5] these nanomaterials, and some of the new functionalities obtained. This includes the creation of localized spin textures, topological defects and stray fields, exploiting a combination of geometrical effects and inter- element interactions [6, 7], the automotive 3D motion of domain walls [8], the unconventional angular dependence of magnetotransport effects in 3D circuits [9], and the generation of chiral spin interactions across interlayers via interfacial effects in synthetic antiferromagnetic multilayers [10]. Acknowledgements I would like to thank all my group members and collaborators contributing to the work I will be presenting. This work is supported by the European Community under the Horizon 2020 Program, Contract No. 101001290 (3DNANOMAG). References [1] A. Fernández-Pacheco et al, Nature Comm. 8, 1 (2017). [2] L. Skoric et al, Nano Letters 20, 184 (2020). [3] D. Sanz-Hernández et al, Nanomaterials 8, 483 (2018). [4] D. Sanz-Hernández et al, ACS Nano 11, 11066 (2017). [5] M.A. Cascales-Sandoval et al, arXiv:2212.02975 [6] D. Sanz-Hernández et al, ACS Nano 14, 8084 (2020). Host: Termin: Ort: 1/2 [7] C. Donnelly et al, Nature Nanotechnol. 17, 136 (2022). [8] L. Skoric et al, ACS Nano 16, 8860 (2022). [9] F. Meng et al, ACS Nano 15, 6765 (2021). [10] A. Fernández-Pacheco et al, Nature Mater. 18, 679 (2019).