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

7 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
JournalNature Nanotechnology
DOIs
Publication statusAccepted/In press - Jan 1 2018

Fingerprint

Magnetoelectronics
Nanostructures
Magnetization
Microscopic examination
Multilayers
Textures
Scanning
Data storage equipment
X rays
electrical resistivity
Temperature
data storage
textures
microscopy
magnetization
scanning
room temperature
x rays

ASJC Scopus subject areas

  • Bioengineering
  • Atomic and Molecular Physics, and Optics
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Zeissler, K., Finizio, S., Shahbazi, K., Massey, J., Al-Ma'Mari, F., Bracher, D. M., ... Marrows, C. H. (Accepted/In press). Discrete Hall resistivity contribution from Néel skyrmions in multilayer nanodiscs. Nature Nanotechnology. 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; Al-Ma'Mari, Fatma; Bracher, David M.; Kleibert, Armin; Rosamond, Mark C.; Linfield, Edmund H.; Moore, Thomas A.; Raabe, Jörg; Burnell, Gavin; Marrows, Christopher H.

In: Nature Nanotechnology, 01.01.2018.

Research output: Contribution to journalArticle

Zeissler, K, Finizio, S, Shahbazi, K, Massey, J, Al-Ma'Mari, F, 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. https://doi.org/10.1038/s41565-018-0268-y
Zeissler, Katharina ; Finizio, Simone ; Shahbazi, Kowsar ; Massey, Jamie ; Al-Ma'Mari, Fatma ; 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.
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