Unconventional Integer Quantum Hall Effect in Graphene
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Abstract
Monolayer graphite films, or graphene, have quasiparticle excitations that can be described by (2+1)-dimensional Dirac theory. We demonstrate that this produces an unconventional form of the quantized Hall conductivity sigma(xy) = -(2e2/h)(2n+1) with n = 0, 1, ..., which notably distinguishes graphene from other materials where the integer quantum Hall effect was observed. This unconventional quantization is caused by the quantum anomaly of the n=0 Landau level and was discovered in recent experiments on ultrathin graphite films.
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The record
- Venue
- Physical Review Letters
- Topic
- Graphene research and applications
- Field
- Materials Science
- Canadian institutions
- McMaster University
- Funders
- —
- Keywords
- GrapheneQuantum Hall effectPhysicsQuantumInteger (computer science)Condensed matter physicsQuantum mechanicsElectronComputer science
- Has abstract in OpenAlex
- yes