2025/02/16 by Rintaro Eto, Masahito Mochizuki, Eto, Rintaro +3 · 1 citation
Materials Science · Physics and Astronomy · #Quasicrystal Structures and Properties #X-ray Diffraction in Crystallography #Historical Astronomy and Related Studies
paper · pdf · doi:10.48550/arxiv.2502.11286
Using a recently-established band representation analysis, we discover two distinct types of topological nodal magnons in the real-space antiferroic ordering of whirling spin arrangements in the Tb-based icosahedral quasicrystal 1/1 approximants, both of which originate from a composite band (co-)representation A\uparrow PIn3(24) and its constituent elementary band representations. The first type is doubly-degenerate nodal line network and nodal planes associated with two-dimensional irreducible band representation, while the second type is a nodal line network due to accidental band inversions. Since our analysis, which relies solely on magnetocrystalline symmetry, is valid for a wide range of materials and spin textures belonging to the same magnetic space group irrespective of composition, these findings offer new universal insights into the research of Tb-based quasicrystal approximants as well as a contribution to broadening the range of topological magnon-hosting materials.