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@ARTICLE{Gospodaric:891827,
author = {Gospodaric, Pika and Młyńczak, E. and Soldatov, I. and
Kákay, A. and Bürgler, D. E. and Plucinski, L. and
Schäfer, R. and Fassbender, J. and Schneider, C. M.},
title = {{M}ultistate current-induced magnetization switching in
{A}u/{F}e/{M}g{O}(001) epitaxial heterostructures},
journal = {Physical review research},
volume = {3},
number = {2},
issn = {2643-1564},
address = {College Park, MD},
publisher = {APS},
reportid = {FZJ-2021-01752},
pages = {023089},
year = {2021},
abstract = {Magnetization switching using in-plane charge current
recently has been widely investigated in heavy
metal/ferromagnet bilayers with the switching mechanism
usually attributed to the action of the spin-orbit coupling.
Here we study in-plane current induced magnetization
switching in model epitaxial bilayers that consist of
Au(001) and Fe(001) grown on MgO(001). We use the planar
Hall effect combined with magnetooptical Kerr effect (MOKE)
microscopy to investigate magnetic properties of the
bilayers and current-induced switching. We show that a
current density beyond 1.4×107 A/cm can be employed for
reproducible electrical switching of the magnetization
between multiple stable states that correspond to different
arrangements of magnetic domains with magnetization
direction along one of the in-plane easy magnetization axes
of the Fe(001) film. Lower current densities result in
stable intermediate transversal resistances which are
interpreted based on MOKE-microscopy investigations as
resulting from the current-induced magnetic domain structure
that is formed in the area of the Hall cross. We find that
the physical mechanism of the current-induced magnetization
switching of the Au/Fe/MgO(001) system at room temperature
can be fully explained by the Oersted field, which is
generated by the charge current flowing mostly through the
Au layer.},
cin = {PGI-6},
ddc = {530},
cid = {I:(DE-Juel1)PGI-6-20110106},
pnm = {522 - Quantum Computing (POF4-522)},
pid = {G:(DE-HGF)POF4-522},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000648509300005},
doi = {10.1103/PhysRevResearch.3.023089},
url = {https://juser.fz-juelich.de/record/891827},
}