Weak localization in bilayer graphene with Li-intercalation/desorption

Y. Endo, S. Ichinokura, R. Akiyama, A. Takayama, K. Sugawara, K. Nomura, T. Takahashi, S. Hasegawa

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

We performed in-situ electrical transport measurements for bilayer graphene grown on SiC(0 0 0 1) substrate, Li-intercalated bilayer graphene, and after that desorbing Li atoms by heating. Bilayer graphene after desorbing intercalated Li atoms showed a higher resistivity and different behavior in magnetoconductance compared to pristine bilayer graphene. We observed the weak localization of carriers at low temperatures in all the three samples and analyzed the experimental results with the extended Hikami-Larkin-Nagaoka equation to investigate the transport properties. The result shows that the magnetoconductance of pristine bilayer graphene is described by the AB stacking structure model and the phase breaking scattering is dominated by the electron-electron scattering. The intra-valley scattering occurs most frequently probably due to dopants in SiC substrate. However, in Li-desorbed graphene, the magnetoconductance can be described by neither AB nor AA-stacking model, suggesting the coexistence of domains with several different stacking structures.

Original languageEnglish
Article number305701
JournalJournal of Physics Condensed Matter
Volume30
Issue number30
DOIs
Publication statusPublished - 2018 Jul 2
Externally publishedYes

Keywords

  • Berry phase
  • atomic layer
  • grapheme
  • intercalation
  • quantum coherent transport
  • stacking structure
  • weak localization

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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