Second-Order Phase Transition in the Two-Dimensional Classical Lattice Coulomb Gas of Half-Integer Charges

Chin. Phys. Lett.

2001, Vol. 18

Issue (7): 947-949 DOI:

Original Articles

Second-Order Phase Transition in the Two-Dimensional Classical Lattice Coulomb Gas of Half-Integer Charges

LUO Meng-Bo;CHEN Qing-Hu;XU Zhu-An;JIAO Zheng-Kuan

Department of Physics, Zhejiang University, Hangzhou 310027

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LUO Meng-Bo, CHEN Qing-Hu, XU Zhu-An et al 2001 Chin. Phys. Lett. 18 947-949

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Abstract 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 β and v with a new numerical analysis method. More precise critical temperature T_c = 0.1311(2) and critical exponents β/v = 0.1152(12) and v = 0.857(15) are obtained. The estimated value of v indicates that the charge lattice melting transition is different from the pure 2D Ising transition.

Keywords: 64.60.Cn 64.60.Fr

Published: 01 July 2001

PACS:	64.60.Cn	(Order-disorder transformations)
	64.60.Fr

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2001/V18/I7/0947

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	CHEN Qing-Hu
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