Percolation transition in two-dimensional ±J Ising spin glasses

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• 作者：Imaoka ; Hitoshi ; Ikeda ; Hideo ; Kasai ; Yasuhiro
• 关键词：05.50.+q ; 75.10.Nr ; 64.60.Ak ; 75.40.Mg ; Ising percolation ; Spin glass ; Monte Carlo simulations
• 刊名：Physica A
• 出版年：1997
• 出版时间：November 15, 1997
• 年：1997
• 卷：246
• 期：1-2
• 页码：18-26
• 全文大小：428 K

文摘

The percolation properties of geometrical clusters are investigated for the Ising spin glasses in the square and triangular lattices with the asymmetric weights of ferromagnetic and antiferromagnetic bonds. By Monte Carlo simulation, we obtain the phase diagram of the percolation transition temperature as a function of the weight of ferromagnetic bonds. At each transition temperature, we estimate the critical exponents ν and γ which agree well with those exponents belonging to the universality class of the random bond percolation except for the pure ferromagnetic case.