RENORMALIZATION GROUP DESCRIPTION OF THE EFFECT OF STRUCTURAL DEFECTS ON PHASE TRANSITIONS IN COMPLEX SPIN SYSTEMS WITH RANDOM ANISOTROPY EFFECTS AND STRUCTURAL DEFECTS

被引：5

作者：

Dubs, V. V. ^{[1
]}

Prudnikov, V. V. ^{[1
]}

Prudnikov, P. V. ^{[1
]}

机构：

[1] Dostoevsky Omsk State Univ, Omsk, Russia

来源：

THEORETICAL AND MATHEMATICAL PHYSICS | 2017年 / 190卷 / 03期

基金：

俄罗斯科学基金会;

关键词：

phase transition; amorphous magnet; anisotropy; structural defect; renormalization group method; summation method; 4-COMPONENT VECTOR MODELS; CRITICAL-BEHAVIOR; PHYSICAL REALIZATIONS;

D O I：

10.1134/S0040577917030059

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

For the first time, we present a field theory description of the phase transition in an amorphous magnet with the effects of both random anisotropy and structural defects in the two-loop approximation with the fixed dimension d = 3. For this multivertex model, we determine the system of fixed points of the renormalization group equations and calculate the stability exponents using the Pade-Borel summation method. We show the role of structural defects as stabilizing factors in second-order phase transitions.

引用

页码：359 / 365

页数：7

共 11 条

[1]

Amit D. J., 1978, FIELD THEORY RENORMA

[2]

[Anonymous], 2013, THEORETICAL METHODS

[3]

Dudka M., 2001, Condensed Matter Physics, V4, P459, DOI 10.5488/CMP.4.3.459

[4] CRITICAL-BEHAVIOR OF DISORDERED SPIN SYSTEMS IN 2 AND 3 DIMENSIONS [J].