STATIC AND DYNAMIC CRITICAL BEHAVIOUR OF THE SPIN GLASS Fe0.35Mg0.65Br2

Vetel, J.; Yahiaoui, M.; Bertrand, Dominique; Fert, A.; Redoules, J.P.; Ferré, J.

doi:10.1051/jphyscol:19888488

Cited by 2 publications

(3 citation statements)

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“…Finally, there may even be possible experimental realizations of systems where quasi-two-dimensional magnets form short range clusters with local ferromagnetic or antiferromagnetic order, with random frustrated interactions linking these clusters together. Examples of promising behaviour of this sort are Fe compound with halogens [29] where it might be interesting to look at the data again in view of the present results.…”

Section: Discussionmentioning

confidence: 76%

Ordered phase in the two-dimensional randomly coupled ferromagnet

Hartmann

Campbell

2001

Phys. Rev. B

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True ground states are evaluated for a 2d Ising model with random near neighbor interactions and ferromagnetic second neighbor interactions (the Randomly Coupled Ferromagnet). The spin glass stiffness exponent is positive when the absolute value of the random interaction is weaker than the ferromagnetic interaction. This result demonstrates that in this parameter domain the spin glass like ordering temperature is non-zero for these systems, in strong contrast to the 2d Edwards-Anderson spin glass.Comment: 7 pages; 9 figures; revtex; new version much extende

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Section: Discussionmentioning

confidence: 76%

Ordered phase in the two-dimensional randomly coupled ferromagnet

Hartmann

Campbell

2001

Phys. Rev. B

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“…Theoretical studies, like Monte-Carlo simulations, high temperature developments and many experiments lead to a strong evidence for a nonzero transition temperature Tc in 3d Ising spin glasses [1][2][3][4]. On another hand, all theoreticians agree with a T = 0 transition temperature in .…”

mentioning

confidence: 93%

“…We report on a.c. susceptibility measurements in the Ising insulating spin glas Feo.35M&.65Br2-Some results have been published earlier for this compound [4] but the too crude first analysis had not permitted to evidence a change in the critical behaviour with temperature. We will compare the magnetic dynamic properties of FeO.3SM&>.6SBr2 to those of Feo.3Mgo.7CI2.…”

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confidence: 99%

Dynamic evidence for a 2d - 3d crossover in the Ising spin glass Fe0.35Mg0.65Br2

et al. 1989

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2014 Nous présentons une étude du comportement critique dynamique du verre de spin de type Ising Fe0.35Mg0.65Br2. Les courbes de susceptibilités alternatives ont été déduites de mesures directes et de mesures par effet Faraday sur une large gamme de fréquence allant de 100 kHz à 0.05 Hz. La dépendance en température du temps de relaxation caractéristique du système ne peut être représentée ni par une loi de puissance ni par une loi d'Arrhénius sur toute la gamme de fréquence. Nous montrons que ce système présente un crossover de dimensionalité 2d-3d quand la température décroît.

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STATIC AND DYNAMIC CRITICAL BEHAVIOUR OF THE SPIN GLASS Fe_0.35Mg_0.65Br₂

Cited by 2 publications

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Ordered phase in the two-dimensional randomly coupled ferromagnet

Ordered phase in the two-dimensional randomly coupled ferromagnet

Dynamic evidence for a 2d - 3d crossover in the Ising spin glass Fe0.35Mg0.65Br2

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