Quantum hall ferromagnetism in graphene

Kentaro Nomura, Allan H. MacDonald

Research output: Contribution to journalArticlepeer-review

643 Citations (Scopus)


Graphene is a two-dimensional carbon material with a honeycomb lattice and Dirac-like low-energy excitations. When Zeeman and spin-orbit interactions are neglected, its Landau levels are fourfold degenerate, explaining the 4e2/h separation between quantized Hall conductivity values seen in recent experiments. In this Letter we derive a criterion for the occurrence of interaction-driven quantum Hall effects near intermediate integer values of e2/h due to charge gaps in broken symmetry states.

Original languageEnglish
Article number256602
JournalPhysical review letters
Issue number25
Publication statusPublished - 2006
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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