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cond-mat.stat-mech2001
Surface-induced disorder and aperiodic perturbations at first-order transitions
L. Turban, F. Igloi
In systems displaying a bulk first-order transition the order parameter may vanish continuously at a free surface, a phenomenon which is called surface-induced disorder. In the pre…
cond-mat.stat-mech2001
Critical behaviour near multiple junctions and dirty surfaces in the two-dimensional Ising model
F. Igloi, L. Turban, B. Berche
We consider m two-dimensional semi-infinite planes of Ising spins joined together through surface spins and study the critical behaviour near to the junction. The m=0 limit of the…
cond-mat.stat-mech2001
Critical behaviour in parabolic geometries
I. Peschel, L. Turban, Ferenc Igloi
We study two-dimensional systems with boundary curves described by power laws. Using conformal mappings we obtain the correlations at the bulk critical point. Three different class…