TY - JOUR AU - Hill, Heather AU - Rigosi, Albert AU - Chowdhury, Sugata AU - Yang, Yanfei AU - Nguyen, Nhan AU - Tavazza, Francesca AU - Elmquist, Randolph AU - Newell, David AU - Walker, Angela Hight C2 - Physical Review B DA - 2017-11-28 00:11:00 LA - en PB - Physical Review B PY - 2017 TI - Probing the dielectric response of the interfacial buffer layer in epitaxial graphene via optical spectroscopy ER -