Regensburg 2025 – scientific programme
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MA: Fachverband Magnetismus
MA 31: Poster II
MA 31.13: Poster
Wednesday, March 19, 2025, 17:00–19:30, P1
Detecting correlation between surface and interface magnetism of Mn/Fe thin film heterostructures on the atomic scale — •Toshio Miyamachi1,2, Shuhei Nakashima1, Yasumasa Takagi3, Toshiohiko Yokoyama3, and Fumio Komori1 — 1ISSP, The University of Tokyo, Japan — 2IMaSS, Nagoya University, Japan — 3Institute for Molecular Science, Japan
The magnetic coupling between ferromagnetic (FM) and antiferromagnetic (AFM) layers has been the focus of interest for magnetic multilayer devices. The fundamental magnetic properties of FM/AFM magnetic multilayers, e.g., magnetic moment, magnetic anisotropy rely much on their interfacial structural and electronic properties. In this work, we investigated structural, electronic and magnetic properties of AFM/FM Mn/Fe thin film heterostructures grown on Cu(001) by spin-polarized scanning tunneling microscopy (Sp-STM) and x-ray absorption spectroscopy/x-ray magnetic circular dichroism (XAS/XMCD) [1]. With the help of surface sensitivity of SP-STM and element specificity of XAS/XMCD, electronic and magnetic properties of surface Mn and interface Fe layers were separately investigated. Sp-STM measurements revealed a new type of surface magnetic structures of Mn layers, which could be interpreted in term of the magnetic coupling with underlying Fe layers.
[1] S. Nakashima et al., Adv. Funct. Mater. 29, 1804594 (2019).
Keywords: scanning tunneling microscopy; x-ray magnetic circular dichroism; surface and interface; magnetic anisotropy; magnetic moment