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Inducing skyrmions in ultrathin Fe films by hydrogen exposure
Magnetic skyrmions are localized nanometer-sized spin configurations with particle-like properties, which are envisioned to be used as bits in next-generation information technology. An essential step toward future skyrmion-based applications is to engineer key magnetic parameters for developing and...
Autores principales: | , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5910423/ https://www.ncbi.nlm.nih.gov/pubmed/29679007 http://dx.doi.org/10.1038/s41467-018-04015-z |
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author | Hsu, Pin-Jui Rózsa, Levente Finco, Aurore Schmidt, Lorenz Palotás, Krisztián Vedmedenko, Elena Udvardi, László Szunyogh, László Kubetzka, André von Bergmann, Kirsten Wiesendanger, Roland |
author_facet | Hsu, Pin-Jui Rózsa, Levente Finco, Aurore Schmidt, Lorenz Palotás, Krisztián Vedmedenko, Elena Udvardi, László Szunyogh, László Kubetzka, André von Bergmann, Kirsten Wiesendanger, Roland |
author_sort | Hsu, Pin-Jui |
collection | PubMed |
description | Magnetic skyrmions are localized nanometer-sized spin configurations with particle-like properties, which are envisioned to be used as bits in next-generation information technology. An essential step toward future skyrmion-based applications is to engineer key magnetic parameters for developing and stabilizing individual magnetic skyrmions. Here we demonstrate the tuning of the non-collinear magnetic state of an Fe double layer on an Ir(111) substrate by loading the sample with atomic hydrogen. By using spin-polarized scanning tunneling microscopy, we discover that the hydrogenated system supports the formation of skyrmions in external magnetic fields, while the pristine Fe double layer does not. Based on ab initio calculations, we attribute this effect to the tuning of the Heisenberg exchange and the Dzyaloshinsky–Moriya interactions due to hydrogenation. In addition to interface engineering, hydrogenation of thin magnetic films offers a unique pathway to design and optimize the skyrmionic states in low-dimensional magnetic materials. |
format | Online Article Text |
id | pubmed-5910423 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-59104232018-04-23 Inducing skyrmions in ultrathin Fe films by hydrogen exposure Hsu, Pin-Jui Rózsa, Levente Finco, Aurore Schmidt, Lorenz Palotás, Krisztián Vedmedenko, Elena Udvardi, László Szunyogh, László Kubetzka, André von Bergmann, Kirsten Wiesendanger, Roland Nat Commun Article Magnetic skyrmions are localized nanometer-sized spin configurations with particle-like properties, which are envisioned to be used as bits in next-generation information technology. An essential step toward future skyrmion-based applications is to engineer key magnetic parameters for developing and stabilizing individual magnetic skyrmions. Here we demonstrate the tuning of the non-collinear magnetic state of an Fe double layer on an Ir(111) substrate by loading the sample with atomic hydrogen. By using spin-polarized scanning tunneling microscopy, we discover that the hydrogenated system supports the formation of skyrmions in external magnetic fields, while the pristine Fe double layer does not. Based on ab initio calculations, we attribute this effect to the tuning of the Heisenberg exchange and the Dzyaloshinsky–Moriya interactions due to hydrogenation. In addition to interface engineering, hydrogenation of thin magnetic films offers a unique pathway to design and optimize the skyrmionic states in low-dimensional magnetic materials. Nature Publishing Group UK 2018-04-20 /pmc/articles/PMC5910423/ /pubmed/29679007 http://dx.doi.org/10.1038/s41467-018-04015-z Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Hsu, Pin-Jui Rózsa, Levente Finco, Aurore Schmidt, Lorenz Palotás, Krisztián Vedmedenko, Elena Udvardi, László Szunyogh, László Kubetzka, André von Bergmann, Kirsten Wiesendanger, Roland Inducing skyrmions in ultrathin Fe films by hydrogen exposure |
title | Inducing skyrmions in ultrathin Fe films by hydrogen exposure |
title_full | Inducing skyrmions in ultrathin Fe films by hydrogen exposure |
title_fullStr | Inducing skyrmions in ultrathin Fe films by hydrogen exposure |
title_full_unstemmed | Inducing skyrmions in ultrathin Fe films by hydrogen exposure |
title_short | Inducing skyrmions in ultrathin Fe films by hydrogen exposure |
title_sort | inducing skyrmions in ultrathin fe films by hydrogen exposure |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5910423/ https://www.ncbi.nlm.nih.gov/pubmed/29679007 http://dx.doi.org/10.1038/s41467-018-04015-z |
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