Research output: Contribution to journal › Article › peer-review
Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Short nanometer range optically induced magnetic fluctuations accompanying ultrafast demagnetization of nanoscale ferromagnetic domains
AU - Suturin, Sergey m.
AU - Philippi-Kobs, Andre
AU - Carley, Robert
AU - Gort, Rafael
AU - Grübel, Gerhard
AU - Jal, Emmanuelle
AU - Baidakova, Marina v.
AU - Lobanova, Eugeniya yu.
AU - Mercadier, Laurent
AU - Molodtsov, Serguei l.
AU - Müller, Leonard
AU - Potorochin, Dmitrii v.
AU - Riepp, Matthias
AU - Roseker, Wojciech
AU - Scherz, Andreas
AU - Schlappa, Justine
AU - Le guyader, Loïc
AU - Mercurio, Giuseppe
AU - Turcato, Monica
AU - Van kuiken, Benjamin
AU - Yaroslavtsev, Alexander
AU - Deviatov, Alexander y.
AU - Kvashnin, Yaroslav o.
AU - Lichtenstein, Alexander i.
AU - Mazurenko, Vladimir v.
AU - Pronin, Igor i.
N1 - The XFEL experiment has been carried out along proposal 2313. We acknowledge financial support from the VEKMAG end-station by the German Federal Ministry for Education and Research (BMBF 05K10PC2, 05K10WR1, 05K10KE1) and by HZB. We acknowledge funding from the following institutions: the Ministry of Science and Higher Education of the Russian Federation (Agreement No. 075-15-2021-1349) (S.M.S., M.V.B.), the Swedish Research Council (V.R.) Project No. 2019–03569 (Y.O.K.), the Russian Science Foundation, Grant No. 21-72-10136 (A.Y.D., V.V.M.), and CNRS-MOMENTUM (E.J.).
PY - 2023
Y1 - 2023
N2 - We have studied the nature of optically induced short-range magnetic fluctuations occurring at 10-nm length scale during ultrafast demagnetization in ferromagnetic Co/Pt multilayers. The time resolved probing of magnetization dynamics was performed with femtosecond soft x-ray pulses at the European x-ray free-electron laser. A transient high-q magnetic scattering accompanying and directly correlated to the destruction of the maze domain network has been observed at picosecond time scale in the wave vector region of 0.2-0.8nm-1. This high-q scattering has a purely magnetic nature and is ascribed to the optically induced short-range magnetic fluctuations developing in the disturbed but not fully destroyed magnetic domain network. Finally, we have simulated the optically induced response of the domain system using a two-temperature atomistic spin model and have concluded that the reason behind the high-q scattering is the laser-driven heating inducing thermal fluctuations of the domain magnetic structure.
AB - We have studied the nature of optically induced short-range magnetic fluctuations occurring at 10-nm length scale during ultrafast demagnetization in ferromagnetic Co/Pt multilayers. The time resolved probing of magnetization dynamics was performed with femtosecond soft x-ray pulses at the European x-ray free-electron laser. A transient high-q magnetic scattering accompanying and directly correlated to the destruction of the maze domain network has been observed at picosecond time scale in the wave vector region of 0.2-0.8nm-1. This high-q scattering has a purely magnetic nature and is ascribed to the optically induced short-range magnetic fluctuations developing in the disturbed but not fully destroyed magnetic domain network. Finally, we have simulated the optically induced response of the domain system using a two-temperature atomistic spin model and have concluded that the reason behind the high-q scattering is the laser-driven heating inducing thermal fluctuations of the domain magnetic structure.
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UR - https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=tsmetrics&SrcApp=tsm_test&DestApp=WOS_CPL&DestLinkType=FullRecord&KeyUT=001146517500004
U2 - 10.1103/PhysRevB.108.174444
DO - 10.1103/PhysRevB.108.174444
M3 - Article
VL - 108
JO - Physical Review B
JF - Physical Review B
SN - 2469-9950
IS - 17
M1 - 174444
ER -
ID: 49828801