Anisotropy-driven response of the fractional antiferromagnetic skyrmion lattice in MnSc2 S4 to applied magnetic fields
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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

Anisotropy-driven response of the fractional antiferromagnetic skyrmion lattice in MnSc2 S4 to applied magnetic fields

DOI:https://doi.org/10.1103/PhysRevB.105.224402

Pag. 0-0

Rosales H. D.12, Gomez Albarracin Flavia A.1, Guratinder K.34, Tsurkan Vladimir56, Prodan Lilian56, Ressouche Eric7, Zaharko Oksana3
 
1 Institute of Physics of Liquids and Biological Systems (IFLYSIB), La Plata,
2 National University of La Plata, La Plata,
3 Paul Scherrer Institute,
4 University of Geneva,
5 University of Augsburg,
6 Institute of Applied Physics,
7 Grenoble Alpes University
 
 
Disponibil în IBN: 4 iulie 2022


Rezumat

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.

Cuvinte-cheie
Antiferromagnetism, Binary alloys, Intelligent systems, Magnetic fields, Monte Carlo methods, single crystals, Textures

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<cfAbstr cfLangCode='EN' cfTrans='o'><p>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.</p></cfAbstr>
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