Controlling Dzyaloshinskii-Moriya interactions in the skyrmion host candidates FePd1-xPtxMo3 N
Kautzsch L, Bocarsly JD, Felser C, Wilson SD, Seshadri R (2020)
Publication Type: Journal article
Publication year: 2020
Journal
Book Volume: 4
Article Number: 024412
Journal Issue: 2
DOI: 10.1103/PhysRevMaterials.4.024412
Abstract
Ferromagnets crystallizing in structures described by chiral cubic space groups, including compounds with the B20 or β-Mn structures, are known to host long-period chiral spin textures such as skyrmion lattices. These spin textures are stabilized by a competition between ferromagnetic exchange and antisymmetric Dzyaloshinskii-Moriya (DM) exchange, which is enhanced by the spin-orbit coupling associated with high-atomic-number elements. For real-world application, it is desirable to find materials that can host compact skyrmion lattices at readily accessible temperatures. Here, we report on the crystal chemistry and magnetic phase diagrams of a family of compounds with the filled β-Mn structure, FePd1-xPtxMo3N, with TC ranging from 175 to 240 K. DC and AC magnetization measurements reveal magnetic phase diagrams consistent with the formation of a skyrmion pocket just below TC. The magnitudes of ferromagnetic and DM exchanges are determined from the phase diagrams, demonstrating that the introduction of increasing amounts of Pt can be used to increase spin-orbit coupling in order to control the expected skyrmion lattice parameter between 140 and 65 nm while simultaneously increasing TC.
Involved external institutions
University of California
United States (USA) (US)
Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids
Germany (DE)
United States (USA) (US)
Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids
Germany (DE)
How to cite
APA:
Kautzsch, L., Bocarsly, J.D., Felser, C., Wilson, S.D., & Seshadri, R. (2020). Controlling Dzyaloshinskii-Moriya interactions in the skyrmion host candidates FePd1-xPtxMo3 N. Physical Review Materials, 4(2). https://doi.org/10.1103/PhysRevMaterials.4.024412
MLA:
Kautzsch, Linus, et al. "Controlling Dzyaloshinskii-Moriya interactions in the skyrmion host candidates FePd1-xPtxMo3 N." Physical Review Materials 4.2 (2020).
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