Ginzburg-Landau theory for higher order phase transition

被引：2
|
作者：
Ekuma, C. E. [1 ]
Asomba, G. C. [1 ]
Okoye, C. M. I. [1 ]
机构：
[1] Univ Nigeria, Dept Phys & Astron, Nsukka, Nigeria
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2012年 / 472卷 / 01期
关键词：
Ginzburg-Landau theory; Ehrenfest thermodynamics; Higher order phase transitions; Bogoliubov inequality; Coarse-graining; THERMODYNAMICS; BA0.6K0.4BIO3; EXPONENTS; MODEL;
D O I：
10.1016/j.physc.2011.09.015
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Ginzburg-Landau theory for studying phase transitions of higher order has been derived using coarse graining and lattice formulation within Ehrenfest thermodynamics. Our developed Hamiltonian leads directly to the functional of the system. We studied the evolution of the order parameter using our developed model equations for third and fourth order phase transitions. The periodic nature of the system can be likened to spatially varying periodic soliton/antisoliton lattice of holes in condensate. This is different from what one observes for any conventional solitary wave in the second order phase regime. (C) 2011 Elsevier B.V. All rights reserved.
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页码：1 / 4
页数：4
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