Title :
Effect of grain-boundary plasmon on the negative terahertz dynamic conductivity in graphene
Author :
Soonyoung Cha ; Seong Chu Lim ; Seung Jin Chae ; Young Hee Lee ; Hyunyong Choi
Author_Institution :
Sch. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea
Abstract :
We discuss the origin of negative dynamic terahertz (THz) conductivity in graphene. By performing series of fluence and photon-energy dependent studies, we show that the nonequilibrium THz dynamics is strongly affected by the polycrystalline plasmons.
Keywords :
grain boundaries; graphene; optical conductivity; plasmons; terahertz materials; terahertz wave spectra; C; grain-boundary plasmon; graphene; negative terahertz dynamic conductivity; nonequilibrium terahertz dynamics; photon-energy dependent study; polycrystalline plasmon; Conductivity; Graphene; Hot carriers; Optical pumping; Plasmons; Scattering; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2014 Conference on
Conference_Location :
San Jose, CA
