Low-Temperature Properties of One-Dimensional Heisenberg Systems with Random Anistropy

✍ Scribed by R. S. Gekht

• Publisher: John Wiley and Sons
• Year: 1984
• Tongue: English
• Weight: 459 KB
• Volume: 122
• Category: Article
• ISSN: 0370-1972
• DOI: 10.1002/pssb.2221220215

✦ Synopsis

Abstract

Thermodynamic properties of classical one‐dimensional Heisenberg systems with random V (of the “easy axis” type) and regular D (of the “easy plane” type) anisotropies are considered. The expression for the free energy is obtained by the transfer‐integral techniques and by the solution of the Fokker‐Planck equations. Low‐temperature dependences of susceptibility and correlation lengths are found for a random disordered system. The expression for the square of fluctuation of the S~z~ spin component is obtained in dependence on the parameters V, D and temperature T.