Liou, S.C.S.C.LiouShie, C.-S.C.-S.ShieChen, C.H.C.H.ChenBreitwieser, R.R.BreitwieserPai, W.W.W.W.PaiGuo, G.Y.G.Y.GuoGUANG-YU GUO2020-04-222020-04-22201510980121https://scholars.lib.ntu.edu.tw/handle/123456789/485355[SDGs]SDG7π- plasmon dispersion in free-standing graphene by momentum-resolved electron energy-loss spectroscopyjournal article10.1103/PhysRevB.91.045418