期刊
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
卷 14, 期 4, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/pssr.201900695
关键词
Brillouin light scattering; frequency-division multiplexing; parallel data processing; spin-wave caustics; wave-based logics
资金
- Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) [TRR 173 - 268565370]
- EU Horizon 2020 research and innovation program within the CHIRON project [801055]
- imec's Industrial Affiliation Program on Beyond-CMOS Logic
- Graduate School Materials Science in Mainz (MAINZ) through DFG funding of the Excellence Initiative [GSC-266]
The emerging field of magnonics uses spin waves and their quanta, magnons, to implement wave-based computing on the micro- and nanoscale. Multifrequency magnon networks would allow for parallel data processing within single logic elements, whereas this is not the case with conventional transistor-based electronic logic. However, a lack of experimentally proven solutions to efficiently combine and separate magnons of different frequencies has impeded the intensive use of this concept. Herein, the experimental realization of a spin-wave demultiplexer enabling frequency-dependent separation of magnonic signals in the gigahertz range is demonstrated. The device is based on 2D magnon transport in the form of spin-wave beams in unpatterned magnetic films. The intrinsic frequency dependence of the beam direction is exploited to realize a passive functioning obviating an external control and additional power consumption. This approach paves the way to magnonic multiplexing circuits enabling simultaneous information transport and processing.
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