Monte Carlo studies of the spin-glass-like phase in Fe0.25Zn0.75F2

被引：8

作者：

Barbosa, PHR ^{[1
]}

Raposo, EP ^{[1
]}

Coutinho, MD ^{[1
]}

机构：

[1] Univ Fed Pernambuco, Dept Fis, Lab Fis Teor & Computac, BR-50670901 Recife, PE, Brazil

来源：

JOURNAL OF APPLIED PHYSICS | 2000年 / 87卷 / 09期

关键词：

D O I：

10.1063/1.372760

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Monte Carlo results on the three-dimensional randomly-diluted Ising antiferromagnet FexZn1-xF2 indicate that its spin-glass-like phase at x=0.25 and zero magnetic field is characterized by the presence of finite antiferromagnetic domains, separated by random vacancies, but strongly correlated in time. The glassy behavior is a consequence of the combined action of short-range interactions and the presence of strong density fluctuations in the highly diluted regime, close to the percolation concentration. By studying the aging of the system, we also find that its dynamics is much alike that of theoretical spin-glass models. (C) 2000 American Institute of Physics. [S0021-8979(00)68608-5].

引用

页码：6531 / 6533

页数：3

共 33 条

[1]

[Anonymous], 1997, SPIN GLASSES RANDOM

[2] NEUTRON-SCATTERING STUDY OF AN ISING ANTIFERROMAGNET ABOVE THE PERCOLATION-THRESHOLD - RANDOM-FIELD-INDUCED SPIN-GLASS-LIKE BEHAVIOR IN FE0.31ZN0.69F2 [J].

BELANGER, DP ;

MURRAY, WE ;

MONTENEGRO, FC ;

KING, AR ;

JACCARINO, V ;

ERWIN, RW .

PHYSICAL REVIEW B, 1991, 44 (05) :2161-2168

[3] NEUTRON-SCATTERING STUDY OF THE RANDOM-EXCHANGE ISING SYSTEM FEXZN1-XF2 NEAR THE PERCOLATION-THRESHOLD [J].

BELANGER, DP ;

YOSHIZAWA, H .

PHYSICAL REVIEW B, 1993, 47 (09) :5051-5058

[4]

BELANGER DP, 1997, SPIN GLASSES RANDOM, P251

[5] Multioverlap simulations of the 3D Edwards-Anderson Ising spin glass [J].

Berg, BA ;

Janke, W .

PHYSICAL REVIEW LETTERS, 1998, 80 (21) :4771-4774

[6]

BOUCHAUD JP, 1992, J PHYS I, V2, P1705, DOI 10.1051/jp1:1992238

[7] RANDOM-FIELD EFFECTS IN SITE-DISORDERED ISING ANTIFERROMAGNETS [J].

CARDY, JL .

PHYSICAL REVIEW B, 1984, 29 (01) :505-507

[8] EVIDENCE OF AGING IN SPIN-GLASS MEAN-FIELD MODELS [J].

CUGLIANDOLO, LF ;

KURCHAN, J ;

RITORT, F .

PHYSICAL REVIEW B, 1994, 49 (09) :6331-6334

[9] REPLICA SYMMETRY-BREAKING IN RANDOM-FIELD SYSTEMS [J].

DEALMEIDA, JRL ;

BRUINSMA, R .

PHYSICAL REVIEW B, 1987, 35 (13) :7267-7270

[10] CONCENTRATION-DEPENDENCE OF THE RANDOM-FIELD-CROSSOVER SCALING IN FEXZN1-XF2 [J].

FERREIRA, IB ;

KING, AR ;

JACCARINO, V .

PHYSICAL REVIEW B, 1991, 43 (13) :10797-10802

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