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- W4310921491 abstract "Antiferromagnets are attractive platforms for the propagation of information via spin waves, offering advantages over ferromagnets in speed of response and immunity to external fields. A recent study of the quasi-2D antiferromagnet CrSBr reported that spin wavepackets propagate with group velocities that are orders of magnitude higher than expected from the magnon dispersion obtained by inelastic neutron scattering [1,2]. Here we show that the anomalous magnitude and anisotropy of the group velocity, v_g, are naturally explained by considering the long-range magnetic dipole-dipole interaction. We also demonstrate that v_g can be tuned over orders of magnitude by applying an external magnetic field or varying the sample thickness. Beyond spin wavepacket propagation, the dipolar interaction creates the possibility of non-equilibrium Bose-Einstein condensation in antiferromagnets, previously thought to be a property unique to ferromagnets." @default.
- W4310921491 created "2022-12-21" @default.
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- W4310921491 date "2022-12-06" @default.
- W4310921491 modified "2023-10-16" @default.
- W4310921491 title "Spin wavepacket propagation in quasi-2D antiferromagnets" @default.
- W4310921491 doi "https://doi.org/10.48550/arxiv.2212.03261" @default.
- W4310921491 hasPublicationYear "2022" @default.
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