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![]() ROSALES, H. D., GOMEZ ALBARRACIN, Flavia A., GURATINDER, K., TSURKAN, Vladimir, PRODAN, Lilian, RESSOUCHE, Eric, ZAHARKO, Oksana. Anisotropy-driven response of the fractional antiferromagnetic skyrmion lattice in MnSc2 S4 to applied magnetic fields. In: Physical Review B, 2022, vol. 105, p. 0. ISSN 2469-9950. DOI: https://doi.org/10.1103/PhysRevB.105.224402 |
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Physical Review B | |
Volumul 105 / 2022 / ISSN 2469-9950 /ISSNe 2469-9969 | |
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DOI:https://doi.org/10.1103/PhysRevB.105.224402 | |
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We theoretically and experimentally study the stability of the unconventional fractional antiferromagnetic skyrmion lattice (AF-SkL) in MnSc2S4 spinel under magnetic fields applied along the [1-10] crystal direction. By performing numerical Monte Carlo simulations for the minimal effective spin model that we proposed in S. Gao, Nature 586, 37 (2020)0028-083610.1038/s41586-020-2716-8, we show that the lattice is aligned within the equivalent and symmetric [1-11] or [1-1-1] planes, which are equally inclined to the applied magnetic-field H. We attribute this behavior to the magnetic anisotropy of the host material. Neutron single-crystal diffraction presents a very good agreement with the predictions of the effective model. It reveals that the topological spin texture gets destabilized at low temperatures and moderate magnetic fields and is replaced by a conical phase for H// [1-10]. The present study elucidates the central role of the magnetic anisotropy in the stabilization of AF-Sk states. |
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Cuvinte-cheie Antiferromagnetism, Binary alloys, Intelligent systems, Magnetic fields, Monte Carlo methods, single crystals, Textures |
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By performing numerical Monte Carlo simulations for the minimal effective spin model that we proposed in S. Gao, Nature 586, 37 (2020)0028-083610.1038/s41586-020-2716-8, we show that the lattice is aligned within the equivalent and symmetric [1-11] or [1-1-1] planes, which are equally inclined to the applied magnetic-field H. We attribute this behavior to the magnetic anisotropy of the host material. Neutron single-crystal diffraction presents a very good agreement with the predictions of the effective model. It reveals that the topological spin texture gets destabilized at low temperatures and moderate magnetic fields and is replaced by a conical phase for H// [1-10]. 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