156553 20251017144556.0 doi 10.1021/acsnano.0c00720 sideral 119590 ART-2020-119590 eng Sanz-Hernández, D. Artificial Double-Helix for Geometrical Control of Magnetic Chirality 2020 Access copy available to the general public Unrestricted Chirality plays a major role in nature, from particle physics to DNA, and its control is much sought-after due to the scientific and technological opportunities it unlocks. For magnetic materials, chiral interactions between spins promote the formation of sophisticated swirling magnetic states such as skyrmions, with rich topological properties and great potential for future technologies. Currently, chiral magnetism requires either a restricted group of natural materials or synthetic thin-film systems that exploit interfacial effects. Here, using state-of-the-art nanofabrication and magnetic X-ray microscopy, we demonstrate the imprinting of complex chiral spin states via three-dimensional geometric effects at the nanoscale. By balancing dipolar and exchange interactions in an artificial ferromagnetic double-helix nanostructure, we create magnetic domains and domain walls with a well-defined spin chirality, determined solely by the chiral geometry. We further demonstrate the ability to create confined 3D spin textures and topological defects by locally interfacing geometries of opposite chirality. The ability to create chiral spin textures via 3D nanopatterning alone enables exquisite control over the properties and location of complex topological magnetic states, of great importance for the development of future metamaterials and devices in which chirality provides enhanced functionality. Copyright info:eu-repo/grantAgreement/EC/H2020/746954/EU/Novel industrial processes using the Atomic Layer Deposition technique/ALDing This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 746954-ALDing info:eu-repo/grantAgreement/ES/MINECO-FSE/BES-2015-072950 info:eu-repo/grantAgreement/ES/MINECO/MAT2017-82970-C2-1-R info:eu-repo/grantAgreement/ES/MINECO/MAT2017-82970-C2-2-R info:eu-repo/grantAgreement/ES/MINECO/MAT2018-102627-T info:eu-repo/semantics/openAccess by https://creativecommons.org/licenses/by/4.0/deed.es 15.881 2020 CHEMISTRY, PHYSICAL 12 / 162 = 0.074 2020 Q1 T1 NANOSCIENCE & NANOTECHNOLOGY 11 / 106 = 0.104 2020 Q1 T1 CHEMISTRY, MULTIDISCIPLINARY 14 / 178 = 0.079 2020 Q1 T1 MATERIALS SCIENCE, MULTIDISCIPLINARY 21 / 333 = 0.063 2020 Q1 T1 5.554 2020 Engineering (miscellaneous) 2020 Q1 Physics and Astronomy (miscellaneous) 2020 Q1 Nanoscience and Nanotechnology 2020 Q1 Materials Science (miscellaneous) 2020 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Hierro-Rodriguez, A. Donnelly, C. Pablo-Navarro, J. (orcid)0000-0001-6771-6941 Sorrentino, A. Pereiro, E. Magén, C. Universidad de Zaragoza (orcid)0000-0002-6761-6171 McVitie, S. De Teresa, J.M. Universidad de Zaragoza (orcid)0000-0001-9566-0738 Ferrer, S. Fischer, P. Fernández-Pacheco, A. 2003 395 Universidad de Zaragoza Dpto. Física Materia Condensa. Área Física Materia Condensada 14, 7 (2020), 8084-8092 ACS Nano ACS NANO 1936-0851 7758055 http://zaguan.unizar.es/record/156553/files/texto_completo.pdf Versión publicada 3372769 http://zaguan.unizar.es/record/156553/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:156553 articulos driver 2025-10-17-14:13:20 ARTICLE