Phys. Rev. Lett. 95, 146801 (2005) [4 pages]Unconventional Integer Quantum Hall Effect in GrapheneReceived 26 June 2005; published 28 September 2005 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 σxy=-(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. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.95.146801
DOI:
10.1103/PhysRevLett.95.146801
PACS:
73.43.Cd, 71.70.Di, 81.05.Uw
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.