Temperature effects on the magnetization of quasi-one-dimensional Peierls distorted materials

被引:3
|
作者
Caldas, Heron [1 ]
机构
[1] Univ Fed Sao Joao Del Rei, Dept Ciencias Nat, BR-36301160 Sao Joao Del Rei, MG, Brazil
来源
JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT | 2010年
关键词
electrical and magnetic phenomena (theory); phase transformations (theory); GROSS-NEVEU MODEL; FIELD-THEORY MODELS; FINITE-TEMPERATURE; PHASE-DIAGRAM; SOLITON EXCITATIONS; CONDUCTING POLYMERS; CONDENSED MATTER; POLYACETYLENE; TRANSITION; DENSITY;
D O I
10.1088/1742-5468/2010/03/P03027
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
It is shown that temperature acts to disrupt the magnetization of Peierls distorted quasi-one-dimensional materials (Q1DM). The mean-field finite temperature phase diagram for the field theory model employed is obtained by considering both homogeneous and inhomogeneous condensates. The tricritical points of the second-order transition lines of the gap parameter and magnetization are explicitly calculated. It is also shown that in the absence of an external static magnetic field the magnetization is always zero, at any temperature. As expected, temperature does not induce any magnetization effect on Peierls distorted Q1DM.
引用
收藏
页数:14
相关论文
共 50 条