Surface critical behavior of two-dimensional dilute Ising models
arXiv:cond-mat/9707336 · doi:10.1007/BF02764223
Abstract
Ising models with nearest-neighbor ferromagnetic random couplings on a square lattice with a (1,1) surface are studied, using Monte Carlo techniques and star-tiangle transformation method. In particular, the critical exponent of the surface magnetization is found to be close to that of the perfect model, beta_s=1/2. The crossover from surface to bulk critical properties is discussed.
6 pages in RevTex, 3 ps figures, to appear in Journal of Stat. Phys