Phys. Rev. B 77, 205421 (2008) [8 pages]

Gauge field induced by ripples in graphene

F. Guinea1, Baruch Horovitz2, and P. Le Doussal3
1Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco E-28049 Madrid, Spain
2Department of Physics, Ben Gurion University, Beer Sheva 84105 Israel
3CNRS-Laboratoire de Physique Théorique de l’Ecole Normale Supérieure, 24 rue Lhomond, 75231 Cedex 05 Paris, France

Received 13 March 2008; revised 23 April 2008; published 15 May 2008

We study the effects of quenched height fluctuations (ripples) in graphene on the density of states (DOS). We show that at strong ripple disorder, a divergence in the DOS can lead to an ordered ground state. We also discuss the formation of dislocations in corrugated systems, buckling effects in suspended samples, and the changes in the Landau levels due to the interplay between a real magnetic field and the gauge potential induced by ripples.

URL: http://link.aps.org/doi/10.1103/PhysRevB.77.205421
DOI: 10.1103/PhysRevB.77.205421
PACS: 71.23.−k, 71.55.Jv, 72.15.Rn, 73.21.Ac


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