Discrete Hall resistivity contribution from N\'{e}el skyrmions in multilayer nanodiscs
| Autor: | 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. |
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| Rok vydání: | 2017 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1038/s41565-018-0268-y |
| Popis: | 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. Read-out operation of skyrmion-based spintronic devices will rely upon electrical detection of a single magnetic skyrmion within a nanostructure. Here, we present Pt/Co/Ir nanodiscs which support skyrmions at room temperature. We measured the Hall resistivity whilst simultaneously imaging the spin texture using magnetic scanning transmission x-ray microscopy (STXM). 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 magnetisation over the entire disc. We observed a resistivity contribution which only depends on the number and sign of skyrmion-like objects present in the disc. Each skyrmion gives rise to 22$\pm$2 n{\Omega} cm irrespective of its size. This contribution needs to be considered in all-electrical detection schemes applied to skyrmion-based devices. Comment: 13 pages, 3 figures |
| Databáze: | arXiv |
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