Zero-field skyrmion, meron, and vortex crystals in centrosymmetric hexagonal magnets

Hayami, Satoru

doi:10.1016/j.jmmm.2022.170036

Cited by 2 publications

(1 citation statement)

References 129 publications

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“…This is just the tip of the iceberg of topological non-trivial spin textures [39]. On the one hand, it has been proved that the skyrmion can also appear in the centrosymmetric magnets as a result of other interactions [49][50][51][52][53][54][55][56][57][58][59][60], such as dipolar interaction [49,50], the single-ion anisotropy [51][52][53][54][55][56][57][58] or the bond-dependent interactions [54,61]. On the other hand, beyond the skyrmion, there are many magnetic quasi-particles coming into the sight of researchers in recent years [39,62,63].…”

Section: Introductionmentioning

confidence: 99%

Topological magnons in a non-coplanar magnetic order on the triangular lattice

Bai,

Chen

2024

Phys. Scr.

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The bond-dependent Kitaev interaction K is familiar in the effective spin model of transitionmetal compounds with octahedral ligands. In this work, we find a peculiar non-coplanar magneticorder can be formed with the help of K and next-nearest neighbor Heisenberg coupling J2 on thetriangular lattice. It can be seen as a miniature version of skyrmion crystal, since it has nine spinsand an integer topological number in a magnetic unit cell. The magnon excitations in such an orderare studied by the linear spin-wave theory. Of note is that the change in the relative size of J2 and Kproduces topological magnon phase transitions although the topological number remains unchanged.We also calculated the experimentally observable thermal Hall conductivity, and found that the signsof thermal Hall conductivity will change with topological phase transitions or temperature changes incertain regions.

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