Exciton motion in CrSBr is driven by incoherent magnon currents, producing enhanced isotropic transport near the Neel temperature and superdiffusive spreading in bilayers.
Below we present a model which demonstrates that the exciton drag can be opposite to the direction of magnon propagation (scenario 2 above)
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Exciton transport driven by spin excitations in an antiferromagnet
Exciton motion in CrSBr is driven by incoherent magnon currents, producing enhanced isotropic transport near the Neel temperature and superdiffusive spreading in bilayers.