Low dimensional systems

Ferroelectric phase transition in graphene with the Hubbard interaction

M. B. Belonenko^ab, N. G. Lebedev^ab, N. N. Yanyushkina<sup>ab

a</sup> Volgograd State University
^b Entropique Inc., London, N6J 3S2, ON, Canada

Abstract: It has been revealed that, as an external dc electric field is applied to graphene with the Hubbard interaction between electrons, a spontaneous electric field perpendicular to the applied field can appear. This effect can be due to the nonequilibrium electron subsystem in graphene. The spontaneous field characteristics have been found as a function of the parameters of the problem.

Received: 25.05.2011

 English version: Physics of the Solid State, 2011, 53:12, 2520–2524

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