Plasmon reflection reveals local electronic properties of natural graphene wrinkles

被引：4
作者：
Chen, Runkun [1 ]
Yang, Cui [1 ]
Jia, Yuping [2 ,3 ]
Guo, Liwei [4 ,5 ,6 ]
Chen, Jianing [1 ,6 ]
机构：
[1] Chinese Acad Sci, Univ Chinese Acad Sci, Inst Phys, Beijing Natl Lab Opt Phys, Beijing 100190, Peoples R China
[2] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
[3] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, Changchun 130033, Jilin, Peoples R China
[4] Chinese Acad Sci, Inst Phys, Lab Adv Mat & Electron Microscopy, Beijing Natl Lab Condensed Matter Phys,Res & Dev, Beijing 100190, Peoples R China
[5] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100190, Peoples R China
[6] Songshan Lake Mat Lab, Dongguan 523808, Peoples R China
来源：
CHINESE PHYSICS B | 2019年 / 28卷 / 11期
基金：
中国国家自然科学基金;
关键词：
graphene plasmons; wrinkle; reflection; electronics; RAMAN-SPECTROSCOPY; GRAPHITE;
D O I：
10.1088/1674-1056/ab46a2
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
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.
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页数：5
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