19/10/2020

Stacking and twisting graphene unlocks a rare form of magnetism

Not only is graphene—a one-atom-thick sheet of carbon arranged in a hexagonal lattice—the strongest, thinnest material known to man, it is also an excellent conductor of heat and electricity.

Now, a team of researchers at Columbia University and the University of Washington has discovered that a variety of exotic electronic states, including a rare form of magnetism, can arise in a three-layer graphene structure. The work was inspired by recent studies of twisted monolayers or twisted bilayers of graphene, comprising either two or four total sheets. These materials were found to host an array of unusual electronic states driven by strong interactions between electrons.

The findings appear in an article published Oct. 12 in Nature Physics.

Read More: https://phys.org/news/2020-10-stacking-graphene-rare-magnetism.html

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