TY  - JOUR
AU  - Parchenko, Sergii
AU  - Riepp, Matthias
AU  - Marotzke, Simon
AU  - Åberg Larsson, Agne
AU  - Kapaklis, Vassilios
AU  - Oppeneer, Peter M.
AU  - Scherz, Andreas
TI  - Demagnetization dynamics after noncollinear dual optical excitation
JO  - Physical review / B
VL  - 110
IS  - 5
SN  - 2469-9950
CY  - Woodbury, NY
PB  - Inst.
M1  - PUBDB-2024-06955
SP  - 054425
PY  - 2024
AB  - We explore the impact of optical excitation using two interfering ultrashort optical pulses on ultrafast magnetization dynamics. Our investigation focuses on Pt/Co/Pt multilayers and TbCo alloy samples, employing a dual pump approach. We observe significant variations in the dynamics of magnetization suppression and subsequent recovery when triggered with two optical pulses of the same polarization—essentially meeting conditions for interference. Conversely, dynamics triggered with cross-polarized pump beams exhibit expected similarity to that triggered with a single pulse. Delving into the underlying physical processes contributing to laser-induced demagnetization and recovery dynamics, we find that our current understanding cannot elucidate the observed trends. Consequently, we propose that optical excitation with interfering light possesses the capacity to induce long-lasting alterations in the dynamics of angular momentum.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:001294114900003
DO  - DOI:10.1103/PhysRevB.110.054425
UR  - https://bib-pubdb1.desy.de/record/617649
ER  -