Current-controlled magnetization using interfacial localizations in heterostructures

Wilfrid Prellier (1) , Eui Young Choi (2) , Seok Hyeon Hong (2) , Byong-Guk Park (3) , Prahallad Padhan (4) , Seung Young Park (5) , Younghun Jo (5) , Byeong Cheol Min (3) , Ji Won Seo (2)

1 CRISMAT - Laboratoire de cristallographie et sciences des matériaux
2 Yonsei University
3 KAIST - Korea Advanced Institute of Science and Technology
4 IIT Madras - Indian Institute of Technology Madras
5 KBSI - Korea Basic Science Institute

A systematic study is conducted on an electrically controlled magnetization in tri-layers containing two layers of ferromagnetic (FM) SrRuO3, with antiferromagnetic (AFM) insulating manganites sandwiched in between. Magneto-resistance curves exhibit that a huge weak anti-localization or localization shapes around zero magnetic field and the localization shapes and coercive fields change simultaneously by currents. This results propose that interface-driven magnetic inhomogeneity such as the FM clusters embedded in the AFM matrix, and corresponding localizations play a role as a bridge between the current and magnetism. The results suggest that interfacial magnetism can cause new functions in a heterostructure, leading to an expansion of research subjects of current-controlled magnetism.

Mots clés: Current-controlled magnetization; Interface; Magnetic inhomogeneity; Interfacial localization; Magnetoresistance; Current-controlled magnetization

Domaines: Physique [physics]; Chimie; Matériaux

Wilfrid Prellier, Eui Young Choi, Seok Hyeon Hong, Byong-Guk Park, Prahallad Padhan, et al.. Current-controlled magnetization using interfacial localizations in heterostructures. Applied Surface Science, 2021, 557, pp.149871. ⟨10.1016/j.apsusc.2021.149871⟩. ⟨hal-03417251⟩