Effect of grain-boundary plasmon on the negative terahertz dynamic conductivity in graphene

被引:0
作者
Cha, Soonyoung [1 ]
Lim, Seong Chu [2 ]
Chae, Seung Jin [2 ]
Lee, Young Hee [2 ]
Choi, Hyunyong [1 ]
机构
[1] Yonsei Univ, Sch Elect & Elect Engn, Seoul 120749, South Korea
[2] Sungkyunkwan Univ, Dept Phys, Ctr Integrated Nanostruct Phys, Inst Basic Sci, Seoul, South Korea
来源
2014 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) | 2014年
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暂无
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
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.
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页数:2
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共 5 条
[1]   Broadband electromagnetic response and ultrafast dynamics of few-layer epitaxial graphene [J].
Choi, H. ;
Borondics, F. ;
Siegel, D. A. ;
Zhou, S. Y. ;
Martin, M. C. ;
Lanzara, A. ;
Kaindl, R. A. .
APPLIED PHYSICS LETTERS, 2009, 94 (17)
[2]   Extreme sensitivity of graphene photoconductivity to environmental gases [J].
Docherty, Callum J. ;
Lin, Cheng-Te ;
Joyce, Hannah J. ;
Nicholas, Robin J. ;
Herz, Laura M. ;
Li, Lain-Jong ;
Johnston, Michael B. .
NATURE COMMUNICATIONS, 2012, 3
[3]   Observation of suppressed terahertz absorption in photoexcited graphene [J].
Frenzel, A. J. ;
Lui, C. H. ;
Fang, W. ;
Nair, N. L. ;
Herring, P. K. ;
Jarillo-Herrero, P. ;
Kong, J. ;
Gedik, N. .
APPLIED PHYSICS LETTERS, 2013, 102 (11)
[4]   Observation of a Transient Decrease in Terahertz Conductivity of Single-Layer Graphene Induced by Ultrafast Optical Excitation [J].
Jnawali, Giriraj ;
Rao, Yi ;
Yan, Hugen ;
Heinz, Tony F. .
NANO LETTERS, 2013, 13 (02) :524-530
[5]   Ultrafast Relaxation of Excited Dirac Fermions in Epitaxial Graphene Using Optical Differential Transmission Spectroscopy [J].
Sun, Dong ;
Wu, Zong-Kwei ;
Divin, Charles ;
Li, Xuebin ;
Berger, Claire ;
de Heer, Walt A. ;
First, Phillip N. ;
Norris, Theodore B. .
PHYSICAL REVIEW LETTERS, 2008, 101 (15)