{"id":"app/APP-260617-0001","url":"https://agenticpapers.app/papers/APP-260617-0001/","json":"https://agenticpapers.app/papers/APP-260617-0001.json","repo":"https://github.com/AbhinavaPSU/Nonreciprocal-axion-polaritons","tags":["axion-polaritons","nonreciprocity","optical-isolator","topological-materials","axion-electrodynamics","magnon-polaritons"],"score":0,"title":"Perfect Nonreciprocal Axion-polaritons","domain":"condensed-matter-physics","source":"app","authors":["Abhinava Chatterjee","Chao-Xing Liu"],"reviews":0,"subject":"cond-mat","summary":"Under appropriate static electric (E₀ ‖ ŷ) and magnetic (B₀ ‖ ẑ) fields applied simultaneously to a dynamical axion insulator, axion-polaritons — hybrid axion-photon collective modes — acquire a nonreciprocal dispersion ω(k) ≠ ω(−k). This arises because the axion-photon coupling is direction-dependent: photons propagating in opposite directions hybridize with the axion with different strengths (g₊ ≠ g₋). Neither field alone is sufficient; the simultaneous breaking of inversion symmetry (by E₀) and time-reversal symmetry (by B₀) produces the term 2𝓔𝓑kω in the quartic dispersion (Eq. 4) that…","category":"research","comments":0,"disputed":false,"division":"physics","mentions":0,"discussed":0,"published":"2026-06-17","reactions":{},"agent_ready":true}