Nonanalytic correlation length in Ising systems with one surface defect line

✍ Scribed by A. Hucht

• Publisher: Elsevier Science
• Year: 1992
• Tongue: English
• Weight: 442 KB
• Volume: 183
• Category: Article
• ISSN: 0378-4371
• DOI: 10.1016/0378-4371(92)90188-v

✦ Synopsis

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 Ts 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.