Temperature-induced phase transitions in the correlated quantum Hall state of bilayer graphene

M. Tanaka, K. Watanabe, T. Taniguchi, K. Nomura, S. Tarucha, M. Yamamoto

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


The quantum Hall system can be used to study many-body physics owing to its multiple internal electronic degrees of freedom and tunability. While quantum phase transitions have been studied intensively, research on the temperature-induced phase transitions of this system is limited. We measured the pure bulk conductivity of a quantum Hall antiferromagnetic state in bilayer graphene over a wide range of temperatures and revealed the two-step phase transition associated with the breaking of the long-range order, i.e., the Kosterlitz-Thouless transition, and short-range antiferromagnetic order. Our findings are fundamental to understanding electron correlation in quantum Hall systems.

Original languageEnglish
Article number075427
JournalPhysical Review B
Issue number7
Publication statusPublished - Feb 15 2022
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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