Journal Article

PUBDB-2024-06955

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Demagnetization dynamics after noncollinear dual optical excitation

Parchenko, S. (Corresponding author)XFEL.EU*DESY* ; Riepp, M.XFEL.EU* ; Marotzke, S.Extern*XFEL.EU*DESY* ; Åberg Larsson, A. ; Kapaklis, V.Extern* ; Oppeneer, P. M.Extern*XFEL.EU* ; Scherz, A.XFEL.EU*

2024
Inst. Woodbury, NY

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Please use a persistent id in citations: doi:10.1103/PhysRevB.110.054425  doi:10.3204/PUBDB-2024-06955

Abstract: 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.

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Contributing Institute(s):

1. The European XFEL Users (XFEL-User)
2. FS-FLASH (FS-FLASH)
3. SCS (XFEL_E2_SCS)

Research Program(s):

1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2024

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Electronics and Telecommunications Collection ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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