Magnon topological transition in skyrmion crystal
arXiv:2311.10622 · doi:10.1134/S0021364023603469
Abstract
We study the magnon spectrum in skyrmion crystal formed in thin ferromagnetic films with Dzyalosinskii-Moria interaction in presence of magnetic field. Focusing on two low-lying observable magnon modes and employing stereographic projection method, we develop a theory demonstrating a topological transition in the spectrum. Upon the increase of magnetic field, the gap between two magnon bands closes, with the ensuing change in the topological character of both bands. This phenomenon of gap closing, if confirmed in magnetic resonance experiments, may deserve further investigation by thermal Hall conductivity experiments.
arXiv comment6 pages, 4 figures
References in corpus (16)
- Skyrmion Lattice in a Chiral Magnet
- Advances in the Physics of Magnetic Skyrmions and Perspective for Technology
- Magnon-skyrmion scattering in chiral magnets
- Collective spin excitations of helices and magnetic skyrmions: review and perspectives of magnonics in non-centrosymmetric magnets
- Topological spin waves in the atomic-scale magnetic skyrmion crystal
- Spin waves in a skyrmion crystal
- Magnetic texture-induced thermal Hall effects
- Internal modes of a skyrmion in the ferromagnetic background in chiral magnets
- Computing and Memory Technologies based on Magnetic Skyrmions
- Chiral Magnonic Edge States in Ferromagnetic Skyrmion Crystals Controlled by Magnetic Fields
- Reservoir Computing with Spin Waves in Skyrmion Crystal
- Quantum topological phase transitions in skyrmion crystals
- Towards an effective theory of skyrmion crystals
- Triple helix vs. skyrmion lattice in two-dimensional non-centrosymmetric magnets
- Dynamical susceptibility of Skyrmion crystal
- Goldstone mode of Skyrmion Crystal
Cited by in corpus (5)
- Momentum-space theory for topological magnons in 2D ferromagnetic skyrmion lattices
- Topological transition in spectrum of skyrmion crystal with uniaxial anisotropy
- Magnon edge states of skyrmion crystal in non-uniform magnetic field
- Impact of the honeycomb spin-lattice on topological magnons and edge states in ferromagnetic 2D skyrmion crystals
- On thermal Hall effect in boson systems