Field-Induced kosterlitz-Thouless transition in the N=0 landau level of graphene

Kentaro Nomura, Shinsei Ryu, Dung Hai Lee

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86 Scopus citations


At the charge neutral point, graphene exhibits a very unusual high-resistance metallic state and a transition to a complete insulating phase in a strong magnetic field. We propose that the current carriers in this state are the charged vortices of the XY valley-pseudospin order parameter, a situation which is dual to a conventional thin superconducting film. We study energetics and the stability of this phase in the presence of disorder.

Original languageEnglish (US)
Article number216801
JournalPhysical review letters
Issue number21
StatePublished - Nov 20 2009
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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