Experimental evidence for Efros-Shklovskii variable range hopping in hydrogenated graphene

Chiashain Chuang, R. K. Puddy, Huang De Lin, Shun Tsung Lo, T. M. Chen, C. G. Smith, C. T. Liang

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48 Citations (Scopus)


We have performed transport measurements on a hydrogenated graphene flake. It is found that conventional analysis cannot allow us to determine whether Mott variable range hopping (VRH) or Efros-Shklovskii (ES) VRH is the dominant mechanism in our system. By employing the modified resistance curve derivative analysis (RCDA) method, we are able to unequivocally show that ES VRH dominates and thus Coulomb interaction effects exist in our system at zero magnetic field. Transport data obtained in the intermediate and high field regimes also follow ES VRH based on the RCDA method. Our results suggest that Coulomb interaction effects can play an important role in disordered graphene.

Original languageEnglish
Pages (from-to)905-908
Number of pages4
JournalSolid State Communications
Issue number10
Publication statusPublished - 2012 May

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • Condensed Matter Physics
  • Materials Chemistry


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