NMR linewidth and Skyrmion localization in quantum Hall ferromagnets
  The non-monotonic behavior of the NMR signal linewidth in the 2D quantum Hall system is explained in terms of the interplay between skyrmions localization, due to the influence of disorder, and the non-trivial temperature dependent skyrmion dynamics. 
A. Villares Ferrer, R.L. Doretto, and A.O. Caldeira