Large interlayer Dzyaloshinskii-Moriya interactions across Ag-layers

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Autor/in:
Erscheinungsjahr:
2023
Medientyp:
Text
Schlagworte:
  • cobalt
  • ferromagnetic material
  • platinum
  • ruthenium
  • silver
  • detection method
  • instrumentation
  • light intensity
  • measurement method
  • three-dimensional modeling
  • Article
  • chemical interaction
  • chirality
  • controlled study
  • interlayer Dzyaloshinskii Moriya interaction
  • magnetism
  • oscillation
  • rotation
  • thickness
Beschreibung:
  • Seeking to enhance the strength of the interlayer Dzyaloshinskii-Moriya interaction (IL-DMI) through a combination of atomic and Rashba type spin-orbit coupling (SOC) we studied the strength and the thickness evolution of effective interlayer coupling in Co/Ag/Co trilayers by means of surface sensitive magneto-optical measurements that take advantage of the light penetration depth. Here, we report the observation of oscillatory, thickness-dependent chiral interaction between ferromagnetic layers. Despite the weakness of the Ag atomic SOC, the IL-DMI in our trilayers is orders of magnitude larger than that of known systems using heavy metals as a spacer except of recently reported −0.15 mJ/m2 in Co/Pt/Ru(t)/Pt/Co and varies between ≈ ±0.2 mJ/m2. In contrast to known multilayers Co/Ag/Co promotes in-plane chirality between magnetic layers. The strength of IL-DMI opens up new routes for design of three-dimensional chiral spin structures combining intra- and interlayer DMI and paves the way for enhancements of the DMI strength. © 2023, The Author(s).
Lizenz:
  • info:eu-repo/semantics/openAccess
Quellsystem:
Forschungsinformationssystem der UHH
Interne Metadaten
Quelldatensatz
oai:www.edit.fis.uni-hamburg.de:publications/b4ba1793-0656-435c-9781-26a5dbdb7c94