Abstract
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) |
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Article number | 216801 |
Journal | Physical review letters |
Volume | 103 |
Issue number | 21 |
DOIs | |
State | Published - Nov 20 2009 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy