2022/01/31 by Hantao Zhang, Ran Cheng · 27 citations
Engineering · Physics and Astronomy · #Computer science #Condensed matter physics #Ferromagnetism #Magnetic properties of thin films #Magneto-Optical Properties and Applications #Magnon #Materials science #Mechanical and Optical Resonators #Nernst effect #Nernst equation #Perspective (graphical) #Physics #Quantum mechanics #Spin (aerodynamics) #Thermodynamics #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · doi:10.1063/5.0084359
published in Applied Physics Letters 120(9) (American Institute of Physics)
arxiv created 2022/02/15 · openalex publication_date 2022/02/28 · arxiv updated 2022/03/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Magnon excitations in antiferromagnetic materials and their physical implications enable novel device concepts not available in ferromagnets, emerging as a new area of active research. A unique characteristic of antiferromagnetic magnons is the coexistence of opposite spin polarization, which mimics the electron spin in a variety of transport phenomena. Among them, the most prominent spin-contrasting phenomenon is the magnon spin Nernst effect (SNE), which refers to the generation of transverse pure magnon spin current through a longitudinal temperature gradient. We introduce selected recent progress in the study of magnon SNE in collinear antiferromagnets with a focus on its underlying physical mechanism entailing profound topological features of the magnon band structures. By reviewing how the magnon SNE has inspired and enriched the exploration of topological magnons, we offer our perspectives on this emerging frontier that holds potential in future spintronic nano-technology.