Nonequilibrium critical behavior of highly disordered magnets with long-range defect correlation

被引：2
作者：
Prudnikov, P. V. [1 ]
Medvedeva, M. A. [1 ]
机构：
[1] FM Dostoevskii Omsk State Univ, Omsk 644077, Russia
来源：
LOW TEMPERATURE PHYSICS | 2014年 / 40卷 / 05期
关键词：
CRITICAL RELAXATION; PHASE-TRANSITIONS; CRITICAL-DYNAMICS; MODEL; SYSTEMS;
D O I：
10.1063/1.4876537
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Monte-Carlo methods are used to study the nonequilibrium crystalline behavior of disordered magnets described by a three-dimensional Heisenberg model with extended structural defects. The critical temperature and critical indices are calculated: z = 3.529(125), v = 0.821(14), beta = 0.777(53), and omega = 0.882(49). It is shown that Heisenberg magnets with strong disorder and long-range defect correlations form a distinct universality class. A high concentration of structural defects with long-range correlation is found to cause significant slowing down of the critical relaxation dynamics. A study is made of the effects of aging on the nonequilibrium behavior of highly disordered magnets. (C) 2014 AIP Publishing LLC.
引用
收藏
页码：443 / 449
页数：7
相关论文
共 39 条
[1]   Study of phase transitions from short-time non-equilibrium behaviour [J].
Albano, E. V. ;
Bab, M. A. ;
Baglietto, G. ;
Borzi, R. A. ;
Grigera, T. S. ;
Loscar, E. S. ;
Rodriguez, D. E. ;
Puzzo, M. L. Rubio ;
Saracco, G. P. .
REPORTS ON PROGRESS IN PHYSICS, 2011, 74 (02)
[2]   COEXISTENCE OF 2 LENGTH SCALES IN X-RAY AND NEUTRON CRITICAL SCATTERING - A THEORETICAL INTERPRETATION [J].
ALTARELLI, M ;
NUNEZREGUEIRO, MD ;
PAPOULAR, M .
PHYSICAL REVIEW LETTERS, 1995, 74 (19) :3840-3843
[3]  
[Anonymous], J STAT MECH
[4]  
[Anonymous], 2013, THEORETICAL METHODS
[5]   Finite size effects on measures of critical exponents in d=3 O(N) models [J].
Ballesteros, HG ;
Fernandez, LA ;
MartinMayor, V ;
Sudupe, AM .
PHYSICS LETTERS B, 1996, 387 (01) :125-131
[6]   New universality class in three dimensions? The antiferromagnetic RP(2) model [J].
Ballesteros, HG ;
Fernandez, LA ;
MartinMayor, V ;
Sudupe, AM .
PHYSICS LETTERS B, 1996, 378 (1-4) :207-212
[7]   Critical properties of the antiferromagnetic RP(2) model in three dimensions [J].
Ballesteros, HG ;
Fernandez, LA ;
MartinMayor, V ;
Sudupe, AM .
NUCLEAR PHYSICS B, 1997, 483 (03) :707-736
[8]   THEORY OF ORIENTATIONAL GLASSES MODELS, CONCEPTS, SIMULATIONS [J].
BINDER, K ;
REGER, JD .
ADVANCES IN PHYSICS, 1992, 41 (06) :547-627
[9]  
Binder K., 1981, MONTE CARLO METHODS
[10]   PHASE TRANSITIONS AND MAGNETIC CORRELATIONS IN 2-DIMENSIONAL ANTIFERROMAGNETS [J].
BIRGENEAU, RJ ;
SKALYO, J ;
SHIRANE, G .
JOURNAL OF APPLIED PHYSICS, 1970, 41 (03) :1303-+
1234