SKM 2021 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 3: Posters Magnetism I
MA 3.4: Poster
Montag, 27. September 2021, 13:30–16:30, P
Asymmetric modification of the magnetic proximity effect in Pt/Co/Pt trilayers — •Ankan Mukhopadhyay1, Sarathlal Koyiloth Vayalil1, Dominik Graulich2, Imran Ahamed3, Sonia Francoual4, Arti Kashyap3, Timo Kuschel2, and Anil Kumar P S1 — 1Indian Institute of Science, Bangalore, India — 2Center for Spinelectronic Materials and Devices, Bielefeld University, Germany — 3Indian Institute of Technology, Mandi, India — 4Deutsches Elektronen-Synchrotron, Hamburg, Germany
Interfacial spin-orbit coupling in ferromagnet/nonmagnet systems promotes remarkable spin-related phenomena and interactions which simultaneously provide the electrical manipulation of the magnetic moments up to the point of magnetization switching by current-driven domain wall motion. The phenomenon of a nominally paramagnetic material getting spin-polarized in presence of an adjacent ferromagnetic material by the exchange interaction is known as the magnetic proximity effect (MPE). The MPE in the top and bottom Pt layers induced by Co in Ta/Pt/Co/Pt and Ta/Pt/Co/Cu/Pt multilayers has been studied by interface sensitive, element-specific x-ray resonant magnetic reflectivity at the Pt L3 absorption edge with an in-plane magnetic field. It has been observed that the Ta buffer layer with increasing thickness modifies the bottom Pt growth which in turn reduces the induced magnetic moment in the bottom Pt layer in Ta/Pt/Co/Pt[1], while it decreases in the top Pt layer in Ta/Pt/Co/Cu/Pt if the thickness of the Cu spacer is increased.
[1]A. Mukhopadhyay et al., Phys. Rev. B 102, 144435 (2020).