Observation of a Chern insulator in crystalline ABCA-tetralayer graphene with spin-orbit coupling | Science

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Degeneracies in multilayer graphene, including spin, valley, and layer degrees of freedom, can be lifted by Coulomb interactions, resulting in rich broken-symmetry states. Here, we report a ferromagnetic state in charge-neutral ABCA-tetralayer graphene …



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Kristin Powell is a writer with Global Affairs Press. She covers politics, health, business, and finance—from the big picture to the nitty-gritty details. She loves writing about topics that are relevant to everyday life, whether it's a new product in the marketplace or a political scandal that's making headlines. When she's not writing for Global Affairs Press, she spends her time reading, cooking and baking delicious treats for her friends and family.

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