2018/12/28 by Sebastián A. Díaz, Sebastian A. Diaz, Jelena Klinovaja +1 · 2 citations
Physics and Astronomy · #Antiferromagnetism #Condensed matter physics #Ferromagnetism #Magnetic properties of thin films #Magnon #Magnonics #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Skyrmion #Spin polarization #Topological Materials and Phenomena #Topology (electrical circuits) #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevlett.122.187203
published as Phys. Rev. Lett. 122, 187203 (2019) · 5 pages, 5 figures
arxiv created 2018/12/28 · openalex publication_date 2019/05/09 · arxiv updated 2019/05/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Antiferromagnetic skyrmion crystals are magnetic phases predicted to exist in antiferromagnets with Dzyaloshinskii-Moriya interactions. Their spatially periodic noncollinear magnetic texture gives rise to topological bulk magnon bands characterized by nonzero Chern numbers. We find topologically protected chiral magnonic edge states over a wide range of magnetic fields and Dzyaloshinskii-Moriya interaction values. Moreover, and of particular importance for experimental realizations, edge states appear at the lowest possible energies, namely, within the first bulk magnon gap. Thus, antiferromagnetic skyrmion crystals show great promise as novel platforms for topological magnonics.