Scientists from Aalto University have discovered a method of utilizing slightly twisted graphene layers in order to encode information within them. This method, utilizing insulating ferromagnets with two rotated layers of graphene in between, in a type of sandwich formation, allows for information to be stored within the graphene’s quantum valley degree of freedom, a property found in semiconductors.
Professor Jose Lado, from Aalto’s Department of applied physics described it as such: ‘Valleytronics would potentially allow encoding information in the quantum valley degree of freedom, similar to how electronics do it with charge and spintronics with the spin. What’s more, valleytronic devices would offer a dramatic increase in the processing speeds in comparison with electronics, and with much higher stability towards magnetic field noise in comparison with spintronic devices.’
This discovery has the potential to allow graphene to be used within aspects of quantum computing, thanks to this storage cell of sorts found within its properties.