Chaotic proliferation of relativistic domain walls for reservoir computing
Abstract Magnetic domain walls in antiferromagnets have been proposed as key components for faster conventional information processing, thanks to their enhanced stability and ultrafast propagation. However, how non-conventional computing methods like reservoir computing might take advantage of these...
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| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-04-01
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| Series: | npj Spintronics |
| Online Access: | https://doi.org/10.1038/s44306-025-00079-y |
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| author | J. A. Vélez M.-K. Lee G. Tatara P.-I. Gavriloaea J. Ross D. Laroze U. Atxitia R. F. L. Evans R. W. Chantrell M. Mochizuki R. M. Otxoa |
| author_facet | J. A. Vélez M.-K. Lee G. Tatara P.-I. Gavriloaea J. Ross D. Laroze U. Atxitia R. F. L. Evans R. W. Chantrell M. Mochizuki R. M. Otxoa |
| author_sort | J. A. Vélez |
| collection | DOAJ |
| description | Abstract Magnetic domain walls in antiferromagnets have been proposed as key components for faster conventional information processing, thanks to their enhanced stability and ultrafast propagation. However, how non-conventional computing methods like reservoir computing might take advantage of these properties remains an open question. In this work, we show how complex domain wall patterns can form through the proliferation of multiple-domain walls from the energy stored in a single seed domain wall driven to move at a high speed close to the relativistic limit. We demonstrate that the resulting magnetic texture, consisting of up to hundreds of domain walls with an overall conserved topological charge as the initial seed domain wall, can possess chaotic spatio-temporal dynamics depending on the strength of staggered spin–orbit field induced via applied current. These findings allow us to design a multiple-domain-wall reservoir with high short-term memory and nonlinearity with respect to spin–orbit field inputs, that is suitable for ultrafast, energy-efficient, and non-conventional reservoir computing. |
| format | Article |
| id | doaj-art-84ab4757651f48dda69d86a2a8d747ae |
| institution | DOAJ |
| issn | 2948-2119 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Spintronics |
| spelling | doaj-art-84ab4757651f48dda69d86a2a8d747ae2025-08-20T03:06:48ZengNature Portfolionpj Spintronics2948-21192025-04-01311910.1038/s44306-025-00079-yChaotic proliferation of relativistic domain walls for reservoir computingJ. A. Vélez0M.-K. Lee1G. Tatara2P.-I. Gavriloaea3J. Ross4D. Laroze5U. Atxitia6R. F. L. Evans7R. W. Chantrell8M. Mochizuki9R. M. Otxoa10Donostia International Physics CenterDepartment of Applied Physics, Waseda University, OkuboRIKEN Center for Emergent Matter Science (CEMS) and RIKEN Cluster for Pioneering Research (CPR)Instituto de Ciencia de Materiales de Madrid, CSICSchool of Physics, Engineering and Technology, University of YorkInstituto de Alta Investigación, CEDENNA, Universidad de TarapacáInstituto de Ciencia de Materiales de Madrid, CSICSchool of Physics, Engineering and Technology, University of YorkSchool of Physics, Engineering and Technology, University of YorkDepartment of Applied Physics, Waseda University, OkuboDonostia International Physics CenterAbstract Magnetic domain walls in antiferromagnets have been proposed as key components for faster conventional information processing, thanks to their enhanced stability and ultrafast propagation. However, how non-conventional computing methods like reservoir computing might take advantage of these properties remains an open question. In this work, we show how complex domain wall patterns can form through the proliferation of multiple-domain walls from the energy stored in a single seed domain wall driven to move at a high speed close to the relativistic limit. We demonstrate that the resulting magnetic texture, consisting of up to hundreds of domain walls with an overall conserved topological charge as the initial seed domain wall, can possess chaotic spatio-temporal dynamics depending on the strength of staggered spin–orbit field induced via applied current. These findings allow us to design a multiple-domain-wall reservoir with high short-term memory and nonlinearity with respect to spin–orbit field inputs, that is suitable for ultrafast, energy-efficient, and non-conventional reservoir computing.https://doi.org/10.1038/s44306-025-00079-y |
| spellingShingle | J. A. Vélez M.-K. Lee G. Tatara P.-I. Gavriloaea J. Ross D. Laroze U. Atxitia R. F. L. Evans R. W. Chantrell M. Mochizuki R. M. Otxoa Chaotic proliferation of relativistic domain walls for reservoir computing npj Spintronics |
| title | Chaotic proliferation of relativistic domain walls for reservoir computing |
| title_full | Chaotic proliferation of relativistic domain walls for reservoir computing |
| title_fullStr | Chaotic proliferation of relativistic domain walls for reservoir computing |
| title_full_unstemmed | Chaotic proliferation of relativistic domain walls for reservoir computing |
| title_short | Chaotic proliferation of relativistic domain walls for reservoir computing |
| title_sort | chaotic proliferation of relativistic domain walls for reservoir computing |
| url | https://doi.org/10.1038/s44306-025-00079-y |
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