ArticleStructural dynamics (Melville, N.Y.)2020
Unconventional picosecond strain pulses resulting from the saturation of magnetic stress within a photoexcited rare earth layer.
Article in Structural dynamics (Melville, N.Y.), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 19 citations in OpenAlex.
- Spatial stress profiling by picosecond ultrasonics with X-rays using buried detection layers.Photoacoustics · 2026Article
- Concepts and use cases for picosecond ultrasonics with x-rays.Photoacoustics · 2023Review
- Towards shaping picosecond strain pulses via magnetostrictive transducers.Photoacoustics · 2023Article
- The time-resolved hard X-ray diffraction endstation KMC-3 XPP at BESSY II.Journal of synchrotron radiation · 2021Article
- Analysis of the temperature- and fluence-dependent magnetic stress in laser-excited SrRuOStructural dynamics (Melville, N.Y.) · 2021Article
- Reciprocal space slicing: A time-efficient approach to femtosecond x-ray diffraction.Structural dynamics (Melville, N.Y.) · 2021Article
Corrections and comments
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Authors and funding
6 authors at 2 institutions in 2 countries.
Funding
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Abstract
Optical excitation of spin-ordered rare earth metals triggers a complex response of the crystal lattice since expansive stresses from electron and phonon excitations compete with a contractive stress induced by spin disorder. Using ultrafast x-ray diffraction experiments, we study the layer specific strain response of a dysprosium film within a metallic heterostructure upon femtosecond laser-excitation. The elastic and diffusive transport of energy to an adjacent, non-excited detection layer clearly separates the contributions of strain pulses and thermal excitations in the time domain. We find that energy transfer processes to magnetic excitations significantly modify the observed conventional bipolar strain wave into a unipolar pulse. By modeling the spin system as a saturable energy reservoir that generates substantial contractive stress on ultrafast timescales, we can reproduce the observed strain response and estimate the time- and space dependent magnetic stress. The saturation of the magnetic stress contribution yields a non-monotonous total stress within the nanolayer, which leads to unconventional picosecond strain pulses.
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Registered trials
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