Second-order phase transition in the two-dimensional classical lattice Coulomb gas of half-integer charges

作者：Luo MB^*; Chen QH; Xu ZA; Jiao ZK

来源：Chinese Physics Letters, 2001, 18(7): 947-949.

The second-order phase transition in the two-dimensional (2D) classical Coulomb gas of half-integer charges on a square lattice is investigated by using Monte Carlo simulations. Based on the finite-size scaling analysis, we estimate the second-order phase transition temperature T-c and the static critical exponents beta and nu with a new numerical analysis method. More precise critical temperature T-c = 0.1311(2) and critical exponents beta/nu = 0.1152(12) and nu = 0.857(15) are obtained. The estimated value of nu indicates that the charge lattice melting transition is different from the pure 2D Ising transition.

• 出版日期2001-7
• 单位浙江大学