Tailoring the energy landscape of a bloch point domain wall with curvature
Abstract Topological defects, or singularities, play a key role in the statics and dynamics of complex systems. In magnetism, Bloch point singularities represent point defects that mediate the nucleation of textures such as skyrmions and hopfions. While these textures are typically stabilised in chi...
Saved in:
| Main Authors: | , , , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2025-08-01
|
| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-62705-x |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849342856344371200 |
|---|---|
| author | Sandra Ruiz-Gómez Claas Abert Pamela Morales-Fernández Claudia Fernández-González Sabri Koraltan Lukas Danesi Dieter Suess María Varela Gabriel Sánchez-Santolino Núria Bagués Michael Foerster Miguel Ángel Niño Anna Mandziak Dorota Wilgocka-Ślęzak Pawel Nita Markus Koenig Sebastian Seifert Aurelio Hierro-Rodriguez Amalio Fernández-Pacheco Claire Donnelly |
| author_facet | Sandra Ruiz-Gómez Claas Abert Pamela Morales-Fernández Claudia Fernández-González Sabri Koraltan Lukas Danesi Dieter Suess María Varela Gabriel Sánchez-Santolino Núria Bagués Michael Foerster Miguel Ángel Niño Anna Mandziak Dorota Wilgocka-Ślęzak Pawel Nita Markus Koenig Sebastian Seifert Aurelio Hierro-Rodriguez Amalio Fernández-Pacheco Claire Donnelly |
| author_sort | Sandra Ruiz-Gómez |
| collection | DOAJ |
| description | Abstract Topological defects, or singularities, play a key role in the statics and dynamics of complex systems. In magnetism, Bloch point singularities represent point defects that mediate the nucleation of textures such as skyrmions and hopfions. While these textures are typically stabilised in chiral magnets, the influence of chirality and symmetry breaking on Bloch point singularities remains relatively unexplored. Here, we harness advanced three-dimensional nanofabrication to explore the influence of symmetry breaking on Bloch point textures by introducing controlled nano-curvature in a ferromagnetic nanowire. Combining X-ray magnetic microscopy with the application of in situ magnetic fields, we demonstrate that Bloch point singularity-containing domain walls are stabilised in straight regions of the sample, and determine that curvature can be used to tune the energy landscape of the Bloch points. Not only are we able to pattern pinning points but, by controlling the gradient of curvature, we define asymmetric potential wells to realise a robust Bloch point texture shift-register with non-reciprocal behaviour. These insights into the influence of symmetry on singularities offer a route to the controlled nucleation and propagation of topological textures, providing opportunities for logic and computing devices. |
| format | Article |
| id | doaj-art-a0b1fae6948c42f4a8a97cda8d99832c |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-a0b1fae6948c42f4a8a97cda8d99832c2025-08-20T03:43:14ZengNature PortfolioNature Communications2041-17232025-08-0116111010.1038/s41467-025-62705-xTailoring the energy landscape of a bloch point domain wall with curvatureSandra Ruiz-Gómez0Claas Abert1Pamela Morales-Fernández2Claudia Fernández-González3Sabri Koraltan4Lukas Danesi5Dieter Suess6María Varela7Gabriel Sánchez-Santolino8Núria Bagués9Michael Foerster10Miguel Ángel Niño11Anna Mandziak12Dorota Wilgocka-Ślęzak13Pawel Nita14Markus Koenig15Sebastian Seifert16Aurelio Hierro-Rodriguez17Amalio Fernández-Pacheco18Claire Donnelly19Max Planck Institute for Chemical Physics of SolidsFaculty of Physics, University of ViennaMax Planck Institute for Chemical Physics of SolidsMax Planck Institute for Chemical Physics of SolidsALBA Synchrotron Light Source, CELLS, Cerdanyola del VallesFaculty of Physics, University of ViennaFaculty of Physics, University of ViennaDepartamento de Física de Materiales & Instituto Pluridisciplinar, Universidad Complutense de MadridDepartamento de Física de Materiales & Instituto Pluridisciplinar, Universidad Complutense de MadridALBA Synchrotron Light Source, CELLS, Cerdanyola del VallesALBA Synchrotron Light Source, CELLS, Cerdanyola del VallesALBA Synchrotron Light Source, CELLS, Cerdanyola del VallesSOLARIS Synchrotron light SourcesJerzy Haber Institute of Catalysis and Surface Chemistry, PACSOLARIS Synchrotron light SourcesMax Planck Institute for Chemical Physics of SolidsMax Planck Institute for Chemical Physics of SolidsDepto. Física, Universidad de OviedoInstitute of Applied Physics, TU WienMax Planck Institute for Chemical Physics of SolidsAbstract Topological defects, or singularities, play a key role in the statics and dynamics of complex systems. In magnetism, Bloch point singularities represent point defects that mediate the nucleation of textures such as skyrmions and hopfions. While these textures are typically stabilised in chiral magnets, the influence of chirality and symmetry breaking on Bloch point singularities remains relatively unexplored. Here, we harness advanced three-dimensional nanofabrication to explore the influence of symmetry breaking on Bloch point textures by introducing controlled nano-curvature in a ferromagnetic nanowire. Combining X-ray magnetic microscopy with the application of in situ magnetic fields, we demonstrate that Bloch point singularity-containing domain walls are stabilised in straight regions of the sample, and determine that curvature can be used to tune the energy landscape of the Bloch points. Not only are we able to pattern pinning points but, by controlling the gradient of curvature, we define asymmetric potential wells to realise a robust Bloch point texture shift-register with non-reciprocal behaviour. These insights into the influence of symmetry on singularities offer a route to the controlled nucleation and propagation of topological textures, providing opportunities for logic and computing devices.https://doi.org/10.1038/s41467-025-62705-x |
| spellingShingle | Sandra Ruiz-Gómez Claas Abert Pamela Morales-Fernández Claudia Fernández-González Sabri Koraltan Lukas Danesi Dieter Suess María Varela Gabriel Sánchez-Santolino Núria Bagués Michael Foerster Miguel Ángel Niño Anna Mandziak Dorota Wilgocka-Ślęzak Pawel Nita Markus Koenig Sebastian Seifert Aurelio Hierro-Rodriguez Amalio Fernández-Pacheco Claire Donnelly Tailoring the energy landscape of a bloch point domain wall with curvature Nature Communications |
| title | Tailoring the energy landscape of a bloch point domain wall with curvature |
| title_full | Tailoring the energy landscape of a bloch point domain wall with curvature |
| title_fullStr | Tailoring the energy landscape of a bloch point domain wall with curvature |
| title_full_unstemmed | Tailoring the energy landscape of a bloch point domain wall with curvature |
| title_short | Tailoring the energy landscape of a bloch point domain wall with curvature |
| title_sort | tailoring the energy landscape of a bloch point domain wall with curvature |
| url | https://doi.org/10.1038/s41467-025-62705-x |
| work_keys_str_mv | AT sandraruizgomez tailoringtheenergylandscapeofablochpointdomainwallwithcurvature AT claasabert tailoringtheenergylandscapeofablochpointdomainwallwithcurvature AT pamelamoralesfernandez tailoringtheenergylandscapeofablochpointdomainwallwithcurvature AT claudiafernandezgonzalez tailoringtheenergylandscapeofablochpointdomainwallwithcurvature AT sabrikoraltan tailoringtheenergylandscapeofablochpointdomainwallwithcurvature AT lukasdanesi tailoringtheenergylandscapeofablochpointdomainwallwithcurvature AT dietersuess tailoringtheenergylandscapeofablochpointdomainwallwithcurvature AT mariavarela tailoringtheenergylandscapeofablochpointdomainwallwithcurvature AT gabrielsanchezsantolino tailoringtheenergylandscapeofablochpointdomainwallwithcurvature AT nuriabagues tailoringtheenergylandscapeofablochpointdomainwallwithcurvature AT michaelfoerster tailoringtheenergylandscapeofablochpointdomainwallwithcurvature AT miguelangelnino tailoringtheenergylandscapeofablochpointdomainwallwithcurvature AT annamandziak tailoringtheenergylandscapeofablochpointdomainwallwithcurvature AT dorotawilgockaslezak tailoringtheenergylandscapeofablochpointdomainwallwithcurvature AT pawelnita tailoringtheenergylandscapeofablochpointdomainwallwithcurvature AT markuskoenig tailoringtheenergylandscapeofablochpointdomainwallwithcurvature AT sebastianseifert tailoringtheenergylandscapeofablochpointdomainwallwithcurvature AT aureliohierrorodriguez tailoringtheenergylandscapeofablochpointdomainwallwithcurvature AT amaliofernandezpacheco tailoringtheenergylandscapeofablochpointdomainwallwithcurvature AT clairedonnelly tailoringtheenergylandscapeofablochpointdomainwallwithcurvature |