Abstract
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.
Highlights
The emerging field of magnonics uses spin waves and their quanta, magnons, to combination and separation of spin-wave implement wave-based computing on the micro- and nanoscale
Spin waves offer many advantages for wave-based computing[10,11,12,13,14,15] due to their functioning obviating an external control and additional power consumption. This approach paves the way to magnonic multiplexing circuits enabling simultaneous information transport and processing
The concept of parallel data processing in single elements is tropic propagation of spin waves in suitable magnetic media, very promising as it can multiply the throughput of future logic networks significantly.[1]
Summary
The emerging field of magnonics uses spin waves and their quanta, magnons, to combination and separation of spin-wave implement wave-based computing on the micro- and nanoscale. The observed frequency dependence of the beam directions is utilized to realize the demultiplexing functionality by properly adding two output waveguides after a certain propagation distance.
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