Finite-size scaling analysis of isotropic–polar phase transitions in an amphiphilic fluid
Finite-size scaling analysis of isotropic–polar phase transitions in an amphiphilic fluid
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两亲流体中各向同性极性相变的有限尺寸尺度分析
DOI:
10.1088/0953-8984/24/3/035103
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发表时间:
2011
期刊:
影响因子:
--
通讯作者:
Martin Schoen
中科院分区:
文献类型:
--
作者:
Michael Melle;Stefano Giura;Sergej Schlotthauer;Martin Schoen
We present Monte Carlo simulations of the isotropic–polar (IP) phase transition in an amphiphilic fluid carried out in the isothermal–isobaric ensemble. Our model consists of Lennard-Jones spheres where the attractive part of the potential is modified by an orientation-dependent function. This function gives rise to an angle dependence of the intermolecular attractions corresponding to that characteristic of point dipoles. Our data show a substantial system-size dependence of the dipolar order parameter. We analyze the system-size dependence in terms of the order-parameter distribution and a cumulant involving its first and second moments. The order parameter, its distribution, and susceptibility observe the scaling behavior characteristic of the 3D Ising universality class. Because of this scaling behavior and because all cumulants have a common intersection irrespective of system size we conclude that the IP phase transition is continuous. Considering pressures 1.3≤ P≤ 3.0 we demonstrate that a line of continuous phase transitions exists which is analogous to the Curie line in systems exhibiting a ferroelectric transition. Our results are qualitatively consistent with Landau's theory of continuous phase transitions.
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DOI:
10.1103/physreve.69.031708
发表时间:
2004
期刊:
Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子:
--
作者:
H. Steuer;S. Hess;M. Schoen
通讯作者:
M. Schoen
DOI:
10.1088/1751-8113/46/25/254015
发表时间:
2013-06
期刊:
Journal of Physics A: Mathematical and Theoretical
影响因子:
--
作者:
Hong-liu Yang;G. Radons
通讯作者:
Hong-liu Yang;G. Radons
DOI:
--
发表时间:
1980
期刊:
影响因子:
--
作者:
I. Pardowitz;S. Hess
通讯作者:
S. Hess
影响因子:
4.4
作者:
J. Weis;D. Lévesque
通讯作者:
D. Lévesque
DOI:
--
发表时间:
2003
期刊:
影响因子:
--
作者:
S. Klapp;M. Schoen
通讯作者:
M. Schoen