A Mexican-hat band dispersion in rhombohedral graphene is predicted to stabilize four electron-crystal phases—Wigner, nodal Wigner, self-doped 'phantom' crystal, and hole-lattice 'anticrystal'—mapped over density and displacement field.
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Rhombohedral Graphene: A Tale of Many Crystals
A Mexican-hat band dispersion in rhombohedral graphene is predicted to stabilize four electron-crystal phases—Wigner, nodal Wigner, self-doped 'phantom' crystal, and hole-lattice 'anticrystal'—mapped over density and displacement field.