# Experimental Realization of a Passive GHz Frequency-Division Demultiplexer for Magnonic Logic Networks

## TL;DR

This paper reports the experimental creation of a passive GHz frequency demultiplexer for magnonic logic networks, enabling frequency-dependent separation of spin waves without external control, advancing magnonic data processing.

## Contribution

It introduces a novel passive spin-wave demultiplexer based on 2D magnon transport in unpatterned films, demonstrating frequency-dependent beam direction control.

## Key findings

- Successful experimental demonstration of GHz frequency separation of magnons.
- Passive device operation without external power or control.
- Potential for scalable magnonic multiplexing circuits.

## Abstract

The emerging field of magnonics employs spin waves and their quanta, magnons, to implement wave-based computing on the micro- and nanoscale. Multi-frequency 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. In this Letter, the experimental realization of a spin-wave demultiplexer enabling frequency-dependent separation of magnonic signals in the GHz range is demonstrated. The device is based on two-dimensional 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.

---
Source: https://tomesphere.com/paper/1904.12744