WebAug 7, 2024 · Using the spin-wave theory we show that the ferromagnetic phase of the extended Kitaev-Heisenberg model hosts topological excitations. Along the zigzag edge of the honeycomb lattice we find chiral edge states, which are protected by a nonzero Chern number topological invariant. WebMay 10, 2024 · Topological Magnons and Edge States in Antiferromagnetic Skyrmion Crystals Phys Rev Lett. 2024 May 10;122 (18):187203. doi: …
Topological magnon insulators in two-dimensional van der Waals ...
WebAug 2, 2024 · Abstract. We study the magnon spectrum of stacked zig-zag chains of point magnetic dipoles with an easy axis. The anisotropy due to the dipolar interactions and the two-point basis of the zig-zag chain unit cell combine to give rise to topologically non-trivial magnon bands in 2D zig-zag lattices. Adjusting the distance between the two ... WebDec 28, 2024 · Chiral magnonic edge states in ferromagnetic skyrmion crystals controlled by magnetic fields S. Díaz, Tomoki Hirosawa, Jelena Klinovaja, D. Loss Physics Physical Review Research 2024 The authors show that a ferromagnetic skyrmion crystal provides a novel platform for switchable magnon currents. screenmaker download
Magnon edge states in the hardcore- Bose–Hubbard model
WebNov 29, 2024 · Here we investigate the topological edge states of the system numerically by considering the case where the total magnon number N = 50, and the coupling parameters , , J = 1 and δ = 0.2. In figure 3 (a), we show that two near-zero eigen values could be observed. WebJan 26, 2024 · Figure 8 shows the edge state only appearing in one edge for a given in-gap eigenfrequency. ... Henk, J. & Mertig, I. Edge states in topological magnon insulators. Phys. Rev. B 90, 024412 (2014). WebOct 21, 2024 · also named topological magnon insulator [6], are char-acterized by nonzero Chern numbers and topologically protected magnon edge states, similar to electronic topo-logical insulators [7,8]. Quantum transport based on topological magnon edge states are highly promising to achieve dissipationless transport without ohmic loss [9,10,12{15]. screen magnifyer programs