%0 Journal Article
%T Dielectric susceptibility of magnetoelectric thin films with vortex-antivortex dipole pairs
%A P. I. Karpov
%A S. I. Mukhin
%J Physics
%D 2015
%I arXiv
%X We consider model of quasi-2D magnetoelectric material as XY model for spin system on a lattice with local multiferroic-like interaction of spin and electric polarization vectors. We calculate the contribution of magnetic (spin) vortex-antivortex pairs (which form electric dipoles) to the dielectric susceptibility of the system. We show that in approximation of non-interacting pairs at $T \rightarrow T_{BKT}$ (Berezinskii-Kosterlitz-Thouless temperature) dielectric susceptibility diverges.
%U http://arxiv.org/abs/1506.07856v1