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GrapheneA New Paradigm in Condensed Matter and Device Physics$
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E. L. Wolf

Print publication date: 2013

Print ISBN-13: 9780199645862

Published to Oxford Scholarship Online: January 2014

DOI: 10.1093/acprof:oso/9780199645862.001.0001

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Anomalous properties of graphene

Anomalous properties of graphene

(p.185) 8 Anomalous properties of graphene

E. L. Wolf

Oxford University Press

The disintegration of graphene near 5,000 K is modeled by Ito and Nakamura to produce linear chain fragments. It appears from modelling that the disintegrations initiate in “locally crumpled” regions, where pentagonal and seven-member rings first form. A corollary of the unique electric field effect in graphene is its sensitivity to stray electric fields leading to “charge puddles” in practical samples, obscuring the metal–insulator transition. An anomalous non-local transport effect in magnetic field was reported by Abanin et al. in 2011. Anomalous fractional quantum Hall effects and the Klein tunneling effect are clearly observed in graphene. The anomalous vanishing of backscattering is explained by the dual sublattice aspect of the honeycomb lattice, leading to a carrier’s pseudo-spin that resists reversal. A nematic electron–electron induced transition in bilayer graphene is suggested with some experimental support.

Keywords:   Disintegration, locally crumpled, charge puddles, non-locality, fractional quantum Hall effect, Klein tunnelling, nematic transition

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