期刊
PHYSICAL REVIEW LETTERS
卷 130, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.130.036701
关键词
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We theoretically study the domain wall (DW) magnons, which are elementary collective excitations of magnetic DWs, in easy-axis layered van der Waals (vdW) antiferromagnets and find that they behave as normal modes of coupled spin superfluids. Due to spin-charge coupling in vdW magnets, these DW magnons can be activated by voltage-induced torques, providing a low-dissipation and nanoscale excitation path. The electrical activation and the number of DW magnons at a frequency can be controlled by applying a symmetry-breaking static magnetic field, offering tunability of signal transmission. Our results demonstrate the potential of domain walls in vdW magnets for coherent spin information routing in spintronics and magnetism explorations.
We study, theoretically, domain wall (DW) magnons-elementary collective excitations of magnetic DWs-in easy-axis layered van der Waals (vdW) antiferromagnets, where they behave as normal modes of coupled spin superfluids. We uncover that, due to spin-charge coupling in vdW magnets, such DW magnons can be activated by voltage-induced torques, thereby providing a path for their low-dissipation and nanoscale excitation. Moreover, the electrical activation and the number of DW magnons at a frequency can be controlled by applying symmetry-breaking static magnetic field, adding tunability of signal transmission by them. Our results highlight that domain walls in vdW magnets provide a promising platform to route coherent spin information for a broad range of explorations in spintronics and magnetism.
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