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Magnetization prece...
Magnetization precession after non-collinear dual optical excitation
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- Parchenko, Sergii (författare)
- European XFEL, Holzkoppel 4, D-22869 Schenefeld, Germany.
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- Pecchio, Davide (författare)
- Swiss Fed Inst Technol, Lab Mesoscop Syst, Dept Mat, CH-8093 Zurich, Switzerland.;Paul Scherrer Inst, Lab Multiscale Mat Expt, CH-5232 Villigen, Switzerland.
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- Mondal, Ritwik (författare)
- Indian Inst Technol ISM Dhanbad, Dept Phys, IN-826004 Dhanbad, India.
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- Oppeneer, Peter M. (författare)
- Uppsala universitet,Materialteori
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- Scherz, Andreas (författare)
- European XFEL, Holzkoppel 4, D-22869 Schenefeld, Germany.
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European XFEL, Holzkoppel 4, D-22869 Schenefeld, Germany Swiss Fed Inst Technol, Lab Mesoscop Syst, Dept Mat, CH-8093 Zurich, Switzerland.;Paul Scherrer Inst, Lab Multiscale Mat Expt, CH-5232 Villigen, Switzerland. (creator_code:org_t)
- American Institute of Physics (AIP), 2024
- 2024
- Engelska.
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Ingår i: Journal of Applied Physics. - : American Institute of Physics (AIP). - 0021-8979 .- 1089-7550. ; 135:17
- Relaterad länk:
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
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- We investigate the impact of non-collinear dual optical excitation on magnetization precession in a permalloy thin film using two ultrashort laser pulses. By analyzing the magnetization dynamics using time-resolved magneto-optical methods, we find that excitation with two ultrashort optical pulses introduces a long-lasting modification of the electron system, as indicated by a sizable decrease in the precession frequency and a significant increase (approximately 25%) in the decay time. Our results reveal that the observed effect strongly depends on the respective polarizations of the two excitation pulses and the time delay between the two optical pulses. Our findings indicate the occurrence of a nonlinear opto-spin effect during photoexcitation with two interfering optical pulses, which can potentially be observed in various materials and at different photon wavelengths.
Ämnesord
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
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