Zero and low temperature behavior of the two-dimensional $\pm J$ Ising   spin glass
  Scaling arguments and precise simulations are used to study the square lattice $\pm J$ Ising spin glass, a prototypical model for glassy systems. Droplet theory predicts, and our numerical results show, entropically-stabilized long range spin glass order at zero temperature. The low temperature scaling behavior has an important new crossover length scale that produces a power-law dependence of the heat capacity on temperature. 
Creighton K. Thomas, David A. Huse, A. Alan Middleton
cond-mat.dis-nn