Optical-phonon resonances with saddle-point excitons in twisted-bilayer graphene

Ado Jorio, Mark Kasperczyk, Nick Clark +4

Twisted-bilayer graphene (tBLG) exhibits van Hove singularities in the density of states that can be tuned by changing the twisting angle $\theta$. A $\theta$-defined tBLG has been produced…