Thermally Driven Topology in Frustrated Systems
arXiv:1809.05462 · doi:10.1103/PhysRevB.99.104431
Abstract
Non-trivial topology in a two-dimensional frustrated spin system with the Dzyaloshinskii-Moriya (DM) interaction was investigated by Monto Carlo simulations. At finite temperatures, thermally driven topology was discovered and was found to be dominant at low magnetic field. This topological charge has a quadratic relation with the DM interaction and linear realtions with the external magnetic field or the uniaxial magnetic anisotropy. We also proposed a real frustrated system, the Mn-Bi mono-layer film with exceedingly large DM interaction, to enable thermally driven topology. Other topological non-trivial phases in high magnetic field region were also discussed in this real system.
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Cited by in corpus (3)
- Néel-type skyrmions and their current-induced motion in van der Waals ferromagnet-based heterostructures
- Topological Hall effect arising from the mesoscopic and microscopic non-coplanar magnetic structure in MnBi
- Nernst effect of high-mobility Weyl electrons in NdAlSi enhanced by a Fermi surface nesting instability