Dimensional crossover of quantum Hall conductivity in graphite through proton-irradiation

Do Wan Kim, Kyu Won Lee, Jae Won Jang, Choel Eui Lee

Research output: Contribution to journalArticlepeer-review

Abstract

In this study, quantum Hall effect-like plateaus, exhibiting the behavior of single- and multi-graphene, are observed in ZYA-grade highly oriented pyrolytic graphite (HOPG). Massless Dirac carriers and massive normal carriers of the HOPG are distinguished from the analysis of Shubnikov-de Haas and de Haas van Alphen oscillations. The quantum Hall effect-like plateaus are diminished after proton-irradiation owing to increasing interlayer interaction along the c-axis that causes the change of two-dimensional massless carriers of the HOPG to three-dimensional massive carriers. Moreover, tight-binding calculations exhibit similar diminishing plateaus of the Hall conductivity of HOPG as the interlayer interaction increases. This observation of dimensional crossover of the Hall conductivity demonstrates that proton-irradiation would be a useful tool to control quantum transport in HOPG through manipulating its interlayer interaction.

Original languageEnglish
Pages (from-to)126-132
Number of pages7
JournalCarbon
Volume187
DOIs
Publication statusPublished - 2022 Feb

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (Project No. 2019R1A2C1002076 ) and Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education ( 2016R1A6A1A03012877 ). Also, this work was supported by the Dongguk University Research Fund of 2020. The measurements at the High Magnetic Field Laboratory are gratefully acknowledged.

Publisher Copyright:
© 2021 Elsevier Ltd

Keywords

  • De Haas Van Alphen effect
  • Graphite
  • Proton-irradiation
  • Quantum Hall effect
  • Shubnikov-de Haas oscillation

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science

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