Journal
PHYSICAL REVIEW B
Volume 104, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.104.064434
Keywords
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Funding
- Dutch Ministry of Education, Culture and Science (OCW)
- European Research Council (ERC) under the European Unions Horizon 2020 research and innovation programme [725509]
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In this paper, a theory for nonlocal transport of bound magnons through a ferromagnetic insulator via magnetic domain walls is developed. This framework provides a basis for reconfigurable magnonic devices.
Magnetic domain walls (DWs) function as a waveguide for low-energy magnons. In this paper we develop the theory for the nonlocal transport of these bound magnons through a ferromagnetic insulator (FMI) that are injected and detected electrically in adjacent normal metal leads by spin-flip scatting processes and the (inverse) spin-Hall effect. Our setup requires a twofold degeneracy of the magnetic ground state, which we realize by an easy axis and hard axis anisotropy, in the FMI. This is readily provided by a broad range of materials. The DWis a topologically protected feature of the system and we obtain the nonlocal spin transport through it, and thereby we provide a framework for reconfigureable magnonic devices.
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