Ultrafast control of lattice strain via magnetic circular dichroism
| Autor: | Matias Bargheer, M. Rössle, Niels Keller, Elena Popova, S. P. Zeuschner, Wolfram Leitenberger, Marwan Deb |
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| Přispěvatelé: | Institut für Physik und Astronomie, Universität Potsdam, Groupe d'Etude de la Matière Condensée (GEMAC), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS), Helmholtz-Zentrum Berlin für Materialien und Energie GmbH (HZB) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Diffraction
[PHYS]Physics [physics] Materials science Condensed matter physics Magnetic circular dichroism chemistry.chemical_element Physics::Optics Large scale facilities for research with photons neutrons and ions 02 engineering and technology [CHIM.MATE]Chemical Sciences/Material chemistry 021001 nanoscience & nanotechnology 01 natural sciences Bismuth Magnetic field Magnetization Condensed Matter::Materials Science chemistry Spin wave 0103 physical sciences Femtosecond [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat] 010306 general physics 0210 nano-technology Ultrashort pulse |
| Zdroj: | Physical Review B Physical Review B, American Physical Society, 2021, 103, ⟨10.1103/physrevb.103.064301⟩ |
| ISSN: | 2469-9950 2469-9969 |
| DOI: | 10.1103/physrevb.103.064301⟩ |
| Popis: | Using ultrafast x-ray diffraction, we directly monitor the lattice dynamics induced by femtosecond laser pulses in nanoscale thin films of bismuth iron garnet in external magnetic fields ${H}_{\mathrm{ext}}$. We control the ultrafast laser-induced lattice strain amplitude by changing the laser pulse helicity. The strength of ${H}_{\mathrm{ext}}$ is used as an external parameter to switch the helicity dependence on and off, respectively. Based on magneto-optical spectroscopic measurements, we explain these phenomena by magnetic circular dichroism. Our findings highlight an important approach for ultrafast manipulation of lattice strain in magnetic materials, in particular insulators, and open exciting perspectives towards ultrafast control of lattice strain and heat-induced magnetization switching and spin waves in bismuth substituted iron garnets using the polarization of light. |
| Databáze: | OpenAIRE |
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