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

*المؤلف المقابل لهذا العمل

نتاج البحث: المساهمة في مجلةArticleمراجعة النظراء

72 اقتباسات (Scopus)

ملخص

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.

اللغة الأصليةEnglish
الصفحات (من إلى)1161-1166
عدد الصفحات6
دوريةNature Nanotechnology
مستوى الصوت13
رقم الإصدار12
المعرِّفات الرقمية للأشياء
حالة النشرPublished - ديسمبر 1 2018
منشور خارجيًانعم

ASJC Scopus subject areas

  • ???subjectarea.asjc.1500.1502???
  • ???subjectarea.asjc.3100.3107???
  • ???subjectarea.asjc.2200.2204???
  • ???subjectarea.asjc.2500.2500???
  • ???subjectarea.asjc.3100.3104???
  • ???subjectarea.asjc.2200.2208???

بصمة

أدرس بدقة موضوعات البحث “Discrete Hall resistivity contribution from Néel skyrmions in multilayer nanodiscs'. فهما يشكلان معًا بصمة فريدة.

قم بذكر هذا