From a five-layer graphene sandwich, a rare electronic state emerges

https://phys.org/news/2023-10-five-layer-graphene-sandwich-rare-electronic.html

"high-capacity data storage... increase speed and lower energy cost hard drives... domains of multiferroic storage device could be switched by faster, much lower-power electric field... rhombohedral stacking slows down electrons... of 2 possible valleys in graphene. electrons coordinate settling in only one valley... control both ferro-valleytronics and unconventional ferro-magnet at same time using electric field... double memory of chips... magnetic and valleytronic devices"