Non-equilibrium vortex annealing of structural disorder in Berezinskii-Kosterlitz-Thouless dynamics of the two-dimensional XY-model

@article{Popov2019NonequilibriumVA,
  title={Non-equilibrium vortex annealing of structural disorder in Berezinskii-Kosterlitz-Thouless dynamics of the two-dimensional XY-model},
  author={I Popov and Anna P Popova and Pavel Vladimirovich Prudnikov},
  journal={Europhysics Letters},
  year={2019},
  volume={128}
}
The non-equilibrium annealing of structural disorder in a two-dimensional XY-model leads to coarsening of defects clusters in cores of spin vortices. We revealed the effect of “inertial” growth of the clusters in coarsening dynamic regime. The calculated transverse stiffness as a function of temperature T and spin concentration p of the system in the high-temperature phase T_{\text{BKT}}(p)$ ?> becomes negative and it is described by a power law with temperature-independent exponent . The… 
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