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 SM ISO690:2012BUTYKAI, Adam, BORDACS, Sandor, KISS, Laszlo Ferenc, SZIGETI, Bertalan György, TSURKAN, Vladimir, LOIDL, Alois, KEZSMARKI, Istvan. Relaxation dynamics of modulated magnetic phases in the skyrmion host GaV4 S8: An ac magnetic susceptibility study. In: Physical Review B, 2017, vol. 96, p. 0. ISSN 2469-9950. DOI: https://doi.org/10.1103/PhysRevB.96.104430 |
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  Physical Review B |
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| Volumul 96 / 2017 / ISSN 2469-9950 /ISSNe 2469-9969 | |
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| DOI:https://doi.org/10.1103/PhysRevB.96.104430 | |
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We report on the slow magnetization dynamics observed upon the magnetic phase transitions of GaV4S8, a multiferroic compound featuring a long-ranged cycloidal magnetic order and a Néel-type skyrmion lattice in a relatively broad temperature range below its Curie temperature. The fundamental difference between GaV4S8 and the chiral helimagnets, the prototypical skyrmion host compounds, lies within the polar symmetry of GaV4S8, promoting a cycloidal instead of a helical magnetic order and rendering the magnetic phase diagram essentially different from that in the cubic helimagnets. Our ac magnetic susceptibility study reveals slow relaxation dynamics at the field-driven phase transitions between the cycloidal, skyrmion lattice and field-polarized states. At each phase boundary, the characteristic relaxation times were found to exhibit a strong temperature dependence, starting from the minute range at low temperatures, decreasing to the micro- to millisecond range at higher temperatures. |
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| Cuvinte-cheie Magnetic Bubbles, magnetism, Domain walls |
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