Boolean logic is the foundation of modern digital information processing. Recently, there has been a growing interest in phenomena based on pure spin currents, which allows to move from charge to spin based logic gates. We study a proof-of-principle logic device based on the ferrimagnetic insulator Yttrium Iron Garnet, with Pt strips acting as injectors and detectors for non-equilibrium magnons. We experimentally observe incoherent superposition of magnons generated by different injectors. This allows to implement a fully functional majority gate, enabling multiple logic operations (AND and OR) in one and the same device. Clocking frequencies of the order of several GHz and straightforward down-scaling make our device promising for applications.
Magnon-based logic in a multi-terminal YIG/Pt nanostructure
Kathrin Ganzhorn, Stefan Klingler, Tobias Wimmer, Stephan Geprägs, Rudolf Gross, Hans Huebl, Sebastian T. B. Goennenwein; Magnon-based logic in a multi-terminal YIG/Pt nanostructure. Appl. Phys. Lett. 11 July 2016; 109 (2): 022405. https://doi.org/10.1063/1.4958893
Download citation file: