Inducing skyrmions in ultrathin Fe films by hydrogen exposure

Pin Jui Hsu, Levente Rózsa, Aurore Finco, Lorenz Schmidt, K. Palotás, Elena Vedmedenko, L. Udvardi, L. Szunyogh, André Kubetzka, Kirsten Von Bergmann, Roland Wiesendanger

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number1571
JournalNature Communications
Volume9
Issue number1
DOIs
Publication statusPublished - Dec 1 2018

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Hydrogenation
hydrogenation
Hydrogen
Tuning
Scanning Tunnelling Microscopy
tuning
Magnetic thin films
support systems
magnetic films
Magnetic materials
Scanning tunneling microscopy
hydrogen
Magnetic Fields
magnetic materials
engineers
Information technology
scanning tunneling microscopy
Ion exchange
engineering
Magnetic fields

ASJC Scopus subject areas

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

Cite this

Hsu, P. J., Rózsa, L., Finco, A., Schmidt, L., Palotás, K., Vedmedenko, E., ... Wiesendanger, R. (2018). Inducing skyrmions in ultrathin Fe films by hydrogen exposure. Nature Communications, 9(1), [1571]. https://doi.org/10.1038/s41467-018-04015-z

Inducing skyrmions in ultrathin Fe films by hydrogen exposure. / Hsu, Pin Jui; Rózsa, Levente; Finco, Aurore; Schmidt, Lorenz; Palotás, K.; Vedmedenko, Elena; Udvardi, L.; Szunyogh, L.; Kubetzka, André; Von Bergmann, Kirsten; Wiesendanger, Roland.

In: Nature Communications, Vol. 9, No. 1, 1571, 01.12.2018.

Research output: Contribution to journalArticle

Hsu, PJ, Rózsa, L, Finco, A, Schmidt, L, Palotás, K, Vedmedenko, E, Udvardi, L, Szunyogh, L, Kubetzka, A, Von Bergmann, K & Wiesendanger, R 2018, 'Inducing skyrmions in ultrathin Fe films by hydrogen exposure', Nature Communications, vol. 9, no. 1, 1571. https://doi.org/10.1038/s41467-018-04015-z
Hsu, Pin Jui ; Rózsa, Levente ; Finco, Aurore ; Schmidt, Lorenz ; Palotás, K. ; Vedmedenko, Elena ; Udvardi, L. ; Szunyogh, L. ; Kubetzka, André ; Von Bergmann, Kirsten ; Wiesendanger, Roland. / Inducing skyrmions in ultrathin Fe films by hydrogen exposure. In: Nature Communications. 2018 ; Vol. 9, No. 1.
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