Topological waveguide based on metamaterials of magnetic solitons

Abstract

We theoretically investigate coupled gyration modes of magnetic solitons whose distances to the nearest neighbors are staggered. In a one-dimensional bipartite lattice, analogous to the Su-Schrieffer-Heeger model, there is a mid-gap gyration mode bounded at the domain wall connecting topologically distinct two phases. As a technological application, we show that a one-dimensional domain-wall string in a two-dimensional soliton lattice can serve as a topological waveguide of magnetic excitations, which offers functionalities of a signal localization and a selective propagation of the frequency modes. Our result offers an alternative way to control of the magnetic excitation modes by using a magnetic metamaterial for future spintronic devices.

arXiv comment5 pages, 3 figures

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Cited by in corpus (6)

• Topological insulators and semimetals in classical magnetic systems
• Second-order topological insulator in breathing square lattice of magnetic vortices
• Topological phase transitions at finite temperature
• Robust edge states in magnetic domain-wall racetrack
• Third-order topological insulator in three-dimensional lattice of magnetic vortices
• Type-II Weyl Excitation in Vortex Arrays