Magnon Trap by Chiral Spin Pumping
arXiv:2003.11581 · doi:10.1103/PhysRevB.102.054429
Abstract
Chiral spin pumping is the generation of a unidirectional spin current in half of ferromagnetic films or conductors by dynamic dipolar stray fields from close-by nanomagnets. We formulate a general theory of long-range chiral interactions between magnets mediated by unidirectional traveling waves, e.g., spin waves in a magnetic film or microwaves in a waveguide. The traveling waves emitted by an excited magnet can be perfectly trapped by a second, initially passive, magnet by a dynamical interference effect. When both magnets are excited by a uniform microwave, the chiral interaction between them creates a large imbalance in their magnon numbers.
PRB accepted version, 9 pages, 5 figures
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Cited by in corpus (11)
- Chirality as Generalized Spin-Orbit Interaction in Spintronics
- Perspective: non-Hermitian physics in magnetic systems
- Non-Hermitian coherent coupling of nanomagnets by exchange spin waves
- Efficient Gating of Magnons by Proximity Superconductors
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