Magnetoconductance noise and irreversibilities in submicron wires of   spin-glass n-CdMnTe
  Signatures of spin-glass freezing such as the appearance of 1/f conductance noise, the recovery of universal conductance fluctuations, aging, as well as magnetic and thermal irreversibilities are detected in mesoscopic wires of CdMnTe:I at millikelvin temperatures. Spectral characteristics of conductance time series are consistent with the droplet model of short-range spin-glasses. 
J. Jaroszynski, J. Wrobel, G. Karczewski, T. Wojtowicz, and T. Dietl   (Institute of Physics, Polish Academy of Science, Warsaw)