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Unconventional Integer Quantum Hall Effect in Graphene

2005· article· en· 1,369 citations· W2155422709 on OpenAlex· 10.1103/physrevlett.95.146801

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Canadian affiliationAn author listed a Canadian institution. This is the only route the usual frame has.

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Opus teacher head0.018
GPT teacher head0.330
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Validation status
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

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