Static and dynamic critical behavior of extended-defect N-component systems in cubic anisotropic crystals.
Static and dynamic critical behavior of extended-defect N-component systems in cubic anisotropic crystals.
复制标题
立方各向异性晶体中扩展缺陷 N 组分系统的静态和动态临界行为。
DOI：
10.1103/physrevb.33.3460
复制
发表时间：
1986
期刊：
影响因子：
--
通讯作者：
Fukuda
中科院分区：
文献类型：
--
作者：
Yamazaki;Holz;Ochiai;Fukuda
研究了具有立方各向异性的晶体中N分量自旋系统在扩展缺陷（即d-ε d维随机分布的ε d维连通缺陷）存在下的静态和动态临界行为.这些缺陷使系统的坐标各向异性。由于立方各向异性和坐标各向异性的存在，出现了各种新的临界行为，如扩展缺陷XY系统的ε 1/2（ε <$4-d）展开，扩展缺陷系统的螺旋轨道和振荡临界行为，扩展缺陷N组分系统在自由能稳定边界附近的一级相变（2≤ N< 4），我们将详细研究前两种行为。
We study the static and dynamic critical behavior of N-component spin systems in crystals with cubic anisotropy in the presence of extended defects, namely ε d-dimensionally connected defects distributed randomly in d-ε d dimensions. These defects make the systems coordinate anisotropic. As a result of the presence of the cubic anisotropy and the coordinate anisotropy, various new types of critical behavior appear, eg, an ε 1/2 (ε≡ 4-d) expansion for extended-defect XY systems, spiral trajectories, and oscillatory critical behavior for extended-defect systems, first-order phase transitions for extended-defect N-component systems with 2≤ N< 4 near the stability boundary of the free energy, and so on. The first two types of behavior will be investigated in detail.