Field-induced Kosterlitz-Thouless transition in the n=0 Landau level of graphene.
نویسندگان
چکیده
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.
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ورودعنوان ژورنال:
- Physical review letters
دوره 103 21 شماره
صفحات -
تاریخ انتشار 2009