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@ARTICLE{Parlak:866489,
author = {Parlak, U. and Adam, R. and Bürgler, D. E. and Gang, S.
and Schneider, C. M.},
title = {{O}ptically induced magnetization reversal in [ {C}o / {P}t
] {N} multilayers: {R}ole of domain wall dynamics},
journal = {Physical review / B},
volume = {98},
number = {21},
issn = {2469-9950},
address = {Woodbury, NY},
publisher = {Inst.},
reportid = {FZJ-2019-05591},
pages = {214443},
year = {2018},
abstract = {All-optical switching (AOS) of magnetization in ferri- and
ferromagnetic thin films has in recent years attracted a
strong interest since it allows magnetization reversal in
the absence of applied magnetic field. Here we investigate
AOS in [Co/Pt]N multilayers. The coercivity (HC) of the
multilayers was tuned either by varying the bilayer
repetition number (N) or the sample temperature (T). During
the AOS experiments, we first illuminated the multilayers by
a sequence of femtosecond laser pulses with varying fluence,
light polarization, and repetition rate. The optically
affected area was then imaged with magneto-optical Kerr
microscopy. Our results indicate that the optical pulses can
trigger either AOS or initiate an all-optical domain
formation (AODF). The laser fluence required for AOS scales
linearly with HC and depends on a precise tuning of laser
pulse fluence, repetition rate, and light polarization.
Furthermore, the magnetic response of the samples at a
varying ambient temperature (down to 50 K) and for different
time intervals between subsequent laser pulses point to the
crucial role of domain wall dynamics in optical control of
magnetization in ferromagnetic multilayers.},
cin = {PGI-6},
ddc = {530},
cid = {I:(DE-Juel1)PGI-6-20110106},
pnm = {522 - Controlling Spin-Based Phenomena (POF3-522)},
pid = {G:(DE-HGF)POF3-522},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000454421300001},
doi = {10.1103/PhysRevB.98.214443},
url = {https://juser.fz-juelich.de/record/866489},
}