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SM ISO690:2012 PADMANABHAN, Prashant, SEKIGUCHI, Fumiya, VERSTEEG, Rolf B., SLIVINA, Evgeniia, TSURKAN, Vladimir, BORDACS, Sandor, KEZSMARKI, Istvan, VAN LOOSDRECHT, Paul H.M.M.. Optically Driven Collective Spin Excitations and Magnetization Dynamics in the Néel-type Skyrmion Host GaV4 S8. In: Physical Review Letters, 2019, nr. 10(122), p. 0. ISSN 0031-9007. DOI: https://doi.org/10.1103/PhysRevLett.122.107203 |
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Physical Review Letters | |
Numărul 10(122) / 2019 / ISSN 0031-9007 | |
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DOI:https://doi.org/10.1103/PhysRevLett.122.107203 | |
Pag. 0-0 | |
Rezumat | |
GaV4S8 is a multiferroic semiconductor hosting magnetic cycloid (Cyc) and Néel-type skyrmion lattice (SkL) phases with a broad region of thermal and magnetic stability. Here, we use time-resolved magneto-optical Kerr spectroscopy to show the coherent generation of collective spin excitations in the Cyc and SkL phases. Our micromagnetic simulations reveal that these are driven by an optically induced modulation of uniaxial anisotropy. Our results shed light on spin dynamics in anisotropic materials hosting skyrmions and pave a new pathway for the optical manipulation of their magnetic order. |
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Cuvinte-cheie Anisotropy, Binary alloys, magnetism, Semiconducting gallium compounds, Spin dynamics |
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