SKM 2023 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 40: Poster Magnetism II
MA 40.21: Poster
Donnerstag, 30. März 2023, 14:00–16:00, P2/EG
Theoretical investigation of magnetic order in crystals with space group I41md — •Maurice Colling1 and Jan Masell1,2 — 1Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany — 2RIKEN CEMS, Wako, Japan
Non-collinear magnetic textures with short ranged modulation in the magnetization exhibit novel transport behavior. Such textures have been proposed to be useful in next generation magnetic memory devices. [1] Materials in the space group I41md (#109), such as the Weyl semimetal GdAlSi, are interesting candidates for investigations in this direction because of the many potentially competing interactions. Long-ranged RKKY interaction might stabilize atomic scale spin spirals. Broken inversion symmetry generates an interfacial Dzyaloshinskii-Moriya interaction which favors Néel type spirals. Dipolar interactions, in turn, favor Bloch type helices. We derive a phenomenological Hamiltonian based on symmetry analysis and present the rich phase diagram.
[1] J. Masell, X. Z. Yu, N. Kanazawa, Y. Tokura, and N. Nagaosa, Phys. Rev. B 102, 180402 (2020).