Non-conventional Superconductors and diluted Ising Model
  This paper demonstrates that the results of a Monte Carlo simulation of a diluted 2D Ising antiferromagnetic system corresponds with the phase diagram for non conventional superconductors. An energy gap of this system is defined. We also find a strange phenomenon that when the lattice size of simulation increased the crystal structure becomes more like quasi crystal at the low temperature. 
Xuan Zhong Ni
physics.gen-ph cond-mat.supr-con