Topologically Protected Helical States in Minimally Twisted Bilayer Graphene
Topologically Protected Helical States in Minimally Twisted Bilayer Graphene
In minimally twisted bilayer graphene, a moiré pattern consisting of AB and BA stacking regions separated by domain walls forms. These domain walls are predicted to support counterpropogating topologically protected helical (TPH) edge states when the AB and BA regions are gapped. We fabricate designer moiré crystals with wavelengths longer …