Inverse-design magnonic devices

TL;DR

This paper introduces inverse-design magnonics, a computational method enabling the creation of diverse magnonic devices with specified functionalities, demonstrated through prototypes like multiplexers, switches, and circulators.

Contribution

It presents a universal inverse-design approach for magnonic devices, allowing arbitrary functionalities to be specified and automatically realized using a feedback-based algorithm.

Findings

Successfully designed a magnonic multiplexer, switch, and circulator.

Demonstrated the approach's applicability to linear, nonlinear, and nonreciprocal functionalities.

Enabled development of efficient RF and computing components.

Abstract

The field of magnonics offers a new type of low-power information processing, in which magnons, the quanta of spin waves, carry and process data instead of electrons. Many magnonic devices were demonstrated recently, but the development of each of them requires specialized investigations and, usually, one device design is suitable for one function only. Here, we introduce the method of inverse-design magnonics, in which any functionality can be specified first, and a feedback-based computational algorithm is used to obtain the device design. Our proof-of-concept prototype is based on a rectangular ferromagnetic area which can be patterned using square shaped voids. To demonstrate the universality of this approach, we explore linear, nonlinear and nonreciprocal magnonic functionalities and use the same algorithm to create a magnonic (de-)multiplexer, a nonlinear switch and a circulator. Thus, inverse-design magnonics can be used to develop highly efficient rf applications as well as Boolean and neuromorphic computing building blocks.