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Graphene-induced strong quenching of optical phonons in III-V semiconductor heterostructures

Liu, Qiang L.; Reno, J.L.; Brener, Igal B.

We demonstrate that monolayer graphene transferred onto III-V semiconductor heterostructures induces strong quenching of the optical phonons in III-V semiconductor epilayers. Such graphene-induced optical phonon quenching is even stronger than that of thin metal films.