Charge density wave in graphene: magnetic-field-induced Peierls instability

Details Charge density wave in graphene: magnetic-field-induced Peierls instability Charge density wave in graphene: magnetic-field-induced Peierls instability

2006-12-15

arxiv.org/abs/cond-mat/0612386v1

The European Physical Journal Special Topics 148 (2007) 151-158

Physics

Condensed Matter

Other Condensed Matter

Proceeding of the "graphene conference" (25 September - 01 October 2006) held in Dresden

Scientific paper

10.1140/epjst/e2007-00235-3

We suggest that a magnetic-field-induced Peierls instability accounts for the recent experiment of Zhang et al. in which unexpected quantum Hall plateaus were observed at high magnetic fields in graphene on a substrate. This Peierls instability leads to an out-of-plane lattice distortion resulting in a charge density wave (CDW) on sublattices A and B of the graphene honeycomb lattice. We also discuss alternative microscopic scenarios proposed in the literature and leading to a similar CDW ground state in graphene.

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