Discrete Hall resistivity contribution from Néel skyrmions in multilayer nanodiscs

Katharina Zeissler, Simone Finizio, Kowsar Shahbazi, Jamie Massey, Fatma Al Ma'Mari, David M Bracher, Armin Kleibert, Mark C Rosamond, Edmund H Linfield, Thomas A Moore, Jörg Raabe, Gavin Burnell, Christopher H Marrows

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Magnetic skyrmions are knot-like quasiparticles. They are candidates for non-volatile data storage in which information is moved between fixed read and write terminals. The read-out operation of skyrmion-based spintronic devices will rely on the electrical detection of a single magnetic skyrmion within a nanostructure. Here we present Pt/Co/Ir nanodiscs that support skyrmions at room temperature. We measured the Hall resistivity and simultaneously imaged the spin texture using magnetic scanning transmission X-ray microscopy. The Hall resistivity is correlated to both the presence and size of the skyrmion. The size-dependent part matches the expected anomalous Hall signal when averaging the magnetization over the entire disc. We observed a resistivity contribution that only depends on the number and sign of skyrmion-like objects present in the disc. Each skyrmion gives rise to 22 ± 2 nΩ cm irrespective of its size. This contribution needs to be considered in all-electrical detection schemes applied to skyrmion-based devices. Not only the area of Néel skyrmions but also their number and sign contribute to their Hall resistivity.

Original languageEnglish
Pages (from-to)1161-1166
Number of pages6
JournalNature Nanotechnology
Volume13
Issue number12
Early online date1 Oct 2018
DOIs
Publication statusPublished - 31 Dec 2018

Cite this

Zeissler, K., Finizio, S., Shahbazi, K., Massey, J., Ma'Mari, F. A., Bracher, D. M., ... Marrows, C. H. (2018). Discrete Hall resistivity contribution from Néel skyrmions in multilayer nanodiscs. Nature Nanotechnology, 13(12), 1161-1166. https://doi.org/10.1038/s41565-018-0268-y

Discrete Hall resistivity contribution from Néel skyrmions in multilayer nanodiscs. / Zeissler, Katharina; Finizio, Simone; Shahbazi, Kowsar; Massey, Jamie; Ma'Mari, Fatma Al; Bracher, David M; Kleibert, Armin; Rosamond, Mark C; Linfield, Edmund H; Moore, Thomas A; Raabe, Jörg; Burnell, Gavin; Marrows, Christopher H.

In: Nature Nanotechnology, Vol. 13, No. 12, 31.12.2018, p. 1161-1166.

Research output: Contribution to journalArticle

Zeissler, K, Finizio, S, Shahbazi, K, Massey, J, Ma'Mari, FA, Bracher, DM, Kleibert, A, Rosamond, MC, Linfield, EH, Moore, TA, Raabe, J, Burnell, G & Marrows, CH 2018, 'Discrete Hall resistivity contribution from Néel skyrmions in multilayer nanodiscs', Nature Nanotechnology, vol. 13, no. 12, pp. 1161-1166. https://doi.org/10.1038/s41565-018-0268-y
Zeissler, Katharina ; Finizio, Simone ; Shahbazi, Kowsar ; Massey, Jamie ; Ma'Mari, Fatma Al ; Bracher, David M ; Kleibert, Armin ; Rosamond, Mark C ; Linfield, Edmund H ; Moore, Thomas A ; Raabe, Jörg ; Burnell, Gavin ; Marrows, Christopher H. / Discrete Hall resistivity contribution from Néel skyrmions in multilayer nanodiscs. In: Nature Nanotechnology. 2018 ; Vol. 13, No. 12. pp. 1161-1166.
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