Time-resolved magnetoelectric measurements reveal a coherent ~44 GHz oscillation of the axion angle θ in 6-layer MnBi2Te4, driven by out-of-phase antiferromagnetic magnons, providing the first direct observation of a dynamical axion quasiparticle.
16 a shows the probe wavelength dependence of the E-field induced Kerr rotation
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
fields
cond-mat.mes-hall 1years
2025 1verdicts
CONDITIONAL 1representative citing papers
citing papers explorer
-
Observation of the Axion quasiparticle in 2D MnBi$_2$Te$_4$
Time-resolved magnetoelectric measurements reveal a coherent ~44 GHz oscillation of the axion angle θ in 6-layer MnBi2Te4, driven by out-of-phase antiferromagnetic magnons, providing the first direct observation of a dynamical axion quasiparticle.