Abstract
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 language | English |
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Article number | 256602 |
Journal | Physical review letters |
Volume | 96 |
Issue number | 25 |
DOIs | |
Publication status | Published - 2006 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy(all)