Pump-probe reflectivity on Fe3GeTe2 reveals critical slowing of spin dynamics with exponent ~0.3 and an emergent nonequilibrium A1g phonon Fano asymmetry enhanced in the paramagnetic phase due to anharmonic decay.
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Ultrafast Critical Slowing of Spin Dynamics and Emergent Nonequilibrium Fano Interference in Fe3GeTe2
Pump-probe reflectivity on Fe3GeTe2 reveals critical slowing of spin dynamics with exponent ~0.3 and an emergent nonequilibrium A1g phonon Fano asymmetry enhanced in the paramagnetic phase due to anharmonic decay.