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MA: Fachverband Magnetismus
MA 46: Spin: Transport, Orbitronics and Hall Effects I
MA 46.10: Vortrag
Donnerstag, 19. März 2020, 12:00–12:15, HSZ 403
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 (FM/NM) systems promotes remarkable spin-related phenomena and interactions which simultaneously provide the electrical manipulation of the magnetization to control magnetization switching by current-driven domain wall motion. The phenomenon of a nominally paramagnetic material getting spin-polarized in presence of an adjacent FM material by the exchange interaction, is known as magnetic proximity effect (MPE). The MPE in 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 induced magnetic moment in the bottom Pt layer decreases with the increase of the Ta buffer layer thickness in Ta/Pt/Co/Pt[1], while it decreases in the top Pt layer in Ta/Pt/Co/Cu/Pt due to the increase of the Cu spacer layer.
[1]A. Mukhopadhyay et al., arXiv:1911.12187