{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Katmis F"],"funding":["US Department of Energy, Office of Science, Office of Basic Energy Sciences","Center for Integrated Quantum Materials","ERC Proof of Concept project SuperPHOTON","Office of Naval Research","CNPq","Conselho Nacional de Desenvolvimento Científico e Tecnológico","European Research Council","Brazilian agencies FINEP, FAPEMIG","Air Force Office of Scientific Research award","Army Research Office","U.S. Department of Energy: DE-AC05-00OR22725","National Science Foundation","LTEM setup"],"pagination":["e11754"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC12759252"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["38(1)"],"pubmed_abstract":["Topological spin configurations, such as soliton-like spin texture and Dirac electron assemblies, have recently emerged in fundamental science and technology. Achieving stable topological spin textures at room temperature is crucial for their use as long-range information carriers. However, their creation and manipulation are hindered by multi-step field training and competing interactions. Thus, a spontaneous ground state for multidimensional topological spin textures is desirable, with skyrmions forming swirling, hedgehog-like spin structures in two dimensions and hopfions as their twisted 3D counterparts. Here, the first observation of robust and reproducible topological spin textures of hopfions and skyrmions observed at room temperature and in zero magnetic field is reported, which are stabilized by geometric confinement and protected by interfacial magnetism in a ferromagnet/topological insulator/ferromagnet trilayer heterostructure. These skyrmion-hopfion configurations are directly observed at room temperature with Lorenz transmission electron microscopy. Using micromagnetic modeling, the experimental observations of hopfion-skyrmion assemblies are reproduced. This model reveals a complete picture of how spontaneously organized skyrmion lattices encircled by hopfion rings are controlled by surface electrons, uniaxial anisotropy, and Dzyaloshinskii-Moriya interaction. This study provides evidence that topological chiral spin textures can facilitate the development of magnetic topological carriers, paving the way for ultralow-power and high-density information processing."],"journal":["Advanced materials (Deerfield Beach, Fla.)"],"pubmed_title":["Interface-Induced Stability of Nontrivial Topological Spin Textures: Unveiling Room-Temperature Hopfions and Skyrmions."],"pmcid":["PMC12759252"],"funding_grant_id":["101100718","DMR-1905662","1207469","N00014-13-1-0301","N00014‐13‐1‐0301","DE-AC02-06CH11357","ARO W911NF-20-2-0061","ARO W911NF‐20‐2‐0061","NSF-DMR 1231319","APQ-04548-22","N00014‐20‐1‐2306","FA9550-20-1-0247","948063,SKYNOLIMIT","DMR‐1905662","N00014-20-1-2306"],"pubmed_authors":["Freeland JW","Jamer ME","Cheghabouri AM","Onbasli MC","Heiman D","Katmis F","Yagan R","Lauter V","Zhou H","de Araujo CIL","Moodera JS","Brandt IS"],"additional_accession":[]},"is_claimable":false,"name":"Interface-Induced Stability of Nontrivial Topological Spin Textures: Unveiling Room-Temperature Hopfions and Skyrmions.","description":"Topological spin configurations, such as soliton-like spin texture and Dirac electron assemblies, have recently emerged in fundamental science and technology. Achieving stable topological spin textures at room temperature is crucial for their use as long-range information carriers. However, their creation and manipulation are hindered by multi-step field training and competing interactions. Thus, a spontaneous ground state for multidimensional topological spin textures is desirable, with skyrmions forming swirling, hedgehog-like spin structures in two dimensions and hopfions as their twisted 3D counterparts. Here, the first observation of robust and reproducible topological spin textures of hopfions and skyrmions observed at room temperature and in zero magnetic field is reported, which are stabilized by geometric confinement and protected by interfacial magnetism in a ferromagnet/topological insulator/ferromagnet trilayer heterostructure. These skyrmion-hopfion configurations are directly observed at room temperature with Lorenz transmission electron microscopy. Using micromagnetic modeling, the experimental observations of hopfion-skyrmion assemblies are reproduced. This model reveals a complete picture of how spontaneously organized skyrmion lattices encircled by hopfion rings are controlled by surface electrons, uniaxial anisotropy, and Dzyaloshinskii-Moriya interaction. This study provides evidence that topological chiral spin textures can facilitate the development of magnetic topological carriers, paving the way for ultralow-power and high-density information processing.","dates":{"release":"2026-01-01T00:00:00Z","publication":"2026 Jan","modification":"2026-06-06T09:29:23.09Z","creation":"2026-05-28T03:12:21.872Z"},"accession":"S-EPMC12759252","cross_references":{"pubmed":["40824269"],"doi":["10.1002/adma.202511754"]}}