Marques MI, Gonzalo JA, Iniguez J
Departamento de Fisica de Materiales C-IV, Universidad Atonoma de Madrid, Cantoblanco, 28049 Madrid, Spain.
Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics. 2000 Jul;62(1 Pt A):191-6. doi: 10.1103/physreve.62.191.
The universality class of thermally diluted Ising systems, in which the realization of the disposition of magnetic atoms and vacancies is taken from the local distribution of spins in the pure original Ising model at criticality, is investigated by finite size scaling techniques using the Monte Carlo method. We find that the critical temperature, the critical exponents, and therefore the universality class of these thermally diluted Ising systems depart markedly from the ones of short-range correlated disordered systems. Our results agree fairly well with theoretical predictions previously made by Weinrib and Halperin for systems with long-range correlated disorder.
通过使用蒙特卡罗方法的有限尺寸标度技术，研究了热稀释伊辛系统的普适类，其中磁原子和空位的分布是从处于临界状态的纯原始伊辛模型中自旋的局域分布中获得的。我们发现，这些热稀释伊辛系统的临界温度、临界指数以及因此的普适类与短程相关无序系统的临界温度、临界指数有显著差异。我们的结果与温里布和哈珀林之前对具有长程相关无序系统所做的理论预测相当吻合。
