Decoupling of epitaxial graphene via gold intercalation probed by dispersive Raman spectroscopy

被引：0
|
作者：
机构：
[1] Pillai, P.B.
[2] De Souza, M.
[3] Narula, R.
[4] Reich, S.
[5] Wong, L.Y.
[6] Batten, T.
[7] 4,Pokorny, J.
来源：
Pillai, P.B. (p.pillai@sheffield.ac.uk) | 1600年 / American Institute of Physics Inc.卷 / 117期
关键词：
Signatures of a superlattice structure composed of a quasi periodic arrangement of atomic gold clusters below an epitaxied graphene (EG) layer are examined using dispersive Raman spectroscopy. The gold-graphene system exhibits a laser excitation energy dependant red shift of the 2D mode as compared to pristine epitaxial graphene. The phonon dispersions in both the systems are mapped using the experimentally observed Raman signatures and a third-nearest neighbour tight binding electronic band structure model. Our results reveal that the observed excitation dependent Raman red shift in gold EG primarily arise from the modifications of the phonon dispersion in gold-graphene and shows that the extent of decoupling of graphene from the underlying SiC substrate can be monitored from the dispersive nature of the Raman 2D modes. The intercalated gold atoms restore the phonon band structure of epitaxial graphene towards free standing graphene. © 2015 AIP Publishing LLC;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
引用
收藏
相关论文
共 50 条
  • [41] Determination of substrate pinning in epitaxial and supported graphene layers via Raman scattering
    Ferralis, Nicola
    Maboudian, Roya
    Carraro, Carlo
    PHYSICAL REVIEW B, 2011, 83 (08)
  • [42] Local hole doping concentration modulation on graphene probed by tip-enhanced Raman spectroscopy
    Iwasaki, Takuya
    Zelai, Taharh
    Ye, Sheng
    Tsuchiya, Yoshishige
    Chong, Harold M. H.
    Mizuta, Hiroshi
    CARBON, 2017, 111 : 67 - 73
  • [43] Formation mechanism of graphene quantum dots and their edge state conversion probed by photoluminescence and Raman spectroscopy
    Rajender, Gone
    Giri, P. K.
    JOURNAL OF MATERIALS CHEMISTRY C, 2016, 4 (46) : 10852 - 10865
  • [44] Mechanism of potassium ion intercalation staging in few layered graphene from in situ Raman spectroscopy
    Share, Keith
    Cohn, Adam P.
    Carter, Rachel E.
    Pint, Cary L.
    NANOSCALE, 2016, 8 (36) : 16435 - 16439
  • [45] Hydrogen intercalation of CVD graphene on germanium (001) - Strain and doping analysis using Raman spectroscopy
    Judek, Jaroslaw
    Pasternak, Iwona
    Dabrowski, Pawel
    Strupinski, Wlodek
    Zdrojek, Mariusz
    APPLIED SURFACE SCIENCE, 2019, 473 : 203 - 208
  • [46] Comparative Characteristics of Gold-Gold and Gold-Silver Nanogaps Probed by Raman Scattering Spectroscopy of 1,4-Phenylenediisocyanide
    Kim, Kwan
    Choi, Jeong-Yong
    Shin, Dongha
    Lee, Hyang Bong
    Shin, Kuan Soo
    BULLETIN OF THE KOREAN CHEMICAL SOCIETY, 2011, 32 (08) : 2941 - 2948
  • [47] Raman-Scattering Spectroscopy of Epitaxial Graphene Formed on SiC Film on Si Substrate
    Miyamoto, Yu
    Handa, Hiroyuki
    Saito, Eiji
    Konno, Atsushi
    Narita, Yuzuru
    Suemitsu, Maki
    Fukidome, Hirokazu
    Ito, Takashi
    Yasui, Kanji
    Nakazawa, Hideki
    Endoh, Tetsuo
    E-JOURNAL OF SURFACE SCIENCE AND NANOTECHNOLOGY, 2009, 7 : 107 - 109
  • [48] Studying lithium intercalation into graphite particles via in situ Raman spectroscopy and confocal microscopy
    Migge, S
    Sandmann, G
    Rahner, D
    Dietz, H
    Plieth, W
    JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 2005, 9 (03) : 132 - 137
  • [49] Studying lithium intercalation into graphite particles via in situ Raman spectroscopy and confocal microscopy
    S. Migge
    G. Sandmann
    D. Rahner
    H. Dietz
    W. Plieth
    Journal of Solid State Electrochemistry, 2005, 9 : 132 - 137
  • [50] Electronic structures of an epitaxial graphene monolayer on SiC(0001) after gold intercalation: a first-principles study
    Chuang, Feng-Chuan
    Lin, Wen-Huan
    Huang, Zhi-Quan
    Hsu, Chia-Hsiu
    Kuo, Chien-Cheng
    Ozolins, Vidvuds
    Yeh, V.
    NANOTECHNOLOGY, 2011, 22 (27)
12345