Nonanalytic correlation length in Ising systems with one surface defect line

Details Nonanalytic correlation length in Ising systems with one surface defect line Nonanalytic correlation length in Ising systems with one surface defect line

2001-10-17

arxiv.org/abs/cond-mat/0110351v1

PhysicaA183:223,1992

Physics

Condensed Matter

Statistical Mechanics

18 pages incl. 7 figures, PDF

Scientific paper

10.1016/0378-4371(92)90188-V

A two-dimensional Ising system with ferromagnetic coupling and one defect line at distance L from the surface is solved exactly using Pfaffians. The system shows a singularity in the surface correlation length at a temperature T_s which is smaller than the transition temperature T_c of the bulk. Numerical studies using the transfer matrix technique suggest that this singularity is also present in an Ising system with two defect lines at distance L.

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