中国物理B ›› 2019, Vol. 28 ›› Issue (11): 117302-117302.doi: 10.1088/1674-1056/ab46a2

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇    下一篇

Plasmon reflection reveals local electronic properties of natural graphene wrinkles

Runkun Chen(陈闰堃), Cui Yang(杨翠), Yuping Jia(贾玉萍), Liwei Guo(郭丽伟), Jianing Chen(陈佳宁)   

  1. 1 Beijing National Laboratory for Optical Physics, Institute of Physics, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Beijing 100190, China;
    2 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    3 Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Jilin 130033, China;
    4 Research and Development Center for Functional Crystals, Laboratory of Advanced Materials and Electron Microscopy, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    5 Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100190, China;
    6 Songshan Lake Materials Laboratory, Dongguan 523808, China
  • 收稿日期:2019-08-15 修回日期:2019-09-12 出版日期:2019-11-05 发布日期:2019-11-05
  • 通讯作者: Liwei Guo, Jianing Chen E-mail:lwguo@iphy.ac.cn;jnchen@iphy.ac.cn
  • 基金资助:
    Project supported by the National Key Research and Development Program of China (Grant No. 2016YFA0203500), the National Natural Science Foundation of China (Grant No. 11874407), and Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDB 30000000).

Plasmon reflection reveals local electronic properties of natural graphene wrinkles

Runkun Chen(陈闰堃)1, Cui Yang(杨翠)1, Yuping Jia(贾玉萍)2,3, Liwei Guo(郭丽伟)4,5,6, Jianing Chen(陈佳宁)1,6   

  1. 1 Beijing National Laboratory for Optical Physics, Institute of Physics, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Beijing 100190, China;
    2 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    3 Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Jilin 130033, China;
    4 Research and Development Center for Functional Crystals, Laboratory of Advanced Materials and Electron Microscopy, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    5 Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100190, China;
    6 Songshan Lake Materials Laboratory, Dongguan 523808, China
  • Received:2019-08-15 Revised:2019-09-12 Online:2019-11-05 Published:2019-11-05
  • Contact: Liwei Guo, Jianing Chen E-mail:lwguo@iphy.ac.cn;jnchen@iphy.ac.cn
  • Supported by:
    Project supported by the National Key Research and Development Program of China (Grant No. 2016YFA0203500), the National Natural Science Foundation of China (Grant No. 11874407), and Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDB 30000000).

摘要: We systematically studied surface plasmons reflection by graphene wrinkles with different heights on SiC substrate. Combined with numerical simulation, we found that the geometry corrugation of a few nanometer height wrinkle alone does not causes a reflection of graphene plasmons. Instead, the separated wrinkle from substrate exhibits a nonlinear spatial Fermi energy distribution along the wrinkle, which acts as a heterojunction. Therefor a higher graphene wrinkle induces a stronger damped region when propagating graphene surface plasmons encounter the wrinkle and get reflected.

关键词: graphene plasmons, wrinkle, reflection, electronics

Abstract: We systematically studied surface plasmons reflection by graphene wrinkles with different heights on SiC substrate. Combined with numerical simulation, we found that the geometry corrugation of a few nanometer height wrinkle alone does not causes a reflection of graphene plasmons. Instead, the separated wrinkle from substrate exhibits a nonlinear spatial Fermi energy distribution along the wrinkle, which acts as a heterojunction. Therefor a higher graphene wrinkle induces a stronger damped region when propagating graphene surface plasmons encounter the wrinkle and get reflected.

Key words: graphene plasmons, wrinkle, reflection, electronics

中图分类号:  (Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))

  • 73.20.Mf
61.48.Gh (Structure of graphene) 72.80.Vp (Electronic transport in graphene)