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 language||English (US)|
|Journal||Physical review letters|
|State||Published - Nov 20 2009|
ASJC Scopus subject areas
- Physics and Astronomy(all)