Journal ArticleDOI
Random-Field Instability of the Ordered State of Continuous Symmetry
Yoseph Imry,Shang-keng Ma +1 more
TLDR
In this article, it was shown that when the order parameter has a continuous symmetry, the ordered state is unstable against an arbitrarily weak random field in less than four dimensions and the borderline dimensionality above which mean-field-theory results hold is six.Abstract:
Phase transitions are considered in systems where the field conjugate to the order parameter is static and random. It is demonstrated that when the order parameter has a continuous symmetry, the ordered state is unstable against an arbitrarily weak random field in less than four dimensions. The borderline dimensionality above which mean-field-theory results hold is six. (auth)read more
Citations
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Journal ArticleDOI
Dielectric properties of 0.4Na0.5Bi0.5TiO3–(0.6-x)SrTiO3–xPbTiO3 solid solutions
Sarunas Svirskas,Maksim Ivanov,Sarunas Bagdzevicius,Jan Macutkevic,A. Brilingas,Juras Banys,Jan Dec,Seweryn Miga,M. Dunce,Eriks Birks,Maija Antonova,Andris Sternberg +11 more
TL;DR: In this paper, the linear and nonlinear dielectric permittivity of 0.4 Na 0.5 Bi 0.1, 0.6 -x ) SrTiO 3 − xPbTiO3 solid solutions (x = 0.05,0.15).
Book ChapterDOI
Theory of Manganites
Takashi Hotta,Elbio Dagotto +1 more
TL;DR: Dagotto et al. as mentioned in this paper discussed the present status of theories for manganites and the complex phase diagrams of these materials, with a variety of spin-charge-orbital ordering tendencies, using mean-field and Monte Carlo simulation techniques.
Journal ArticleDOI
Critical scaling in random-field systems: 2 or 3 independent exponents?
TL;DR: In this article, it was shown that the critical scaling behavior of random field systems with short-range interactions and disorder correlations cannot be described in general by only two independent exponents, contrary to previous claims.
Journal ArticleDOI
The effect of quenched disorder in neutral theories
TL;DR: It is shown that the presence of quenched disorder in nonlinear voter models does not allow the separation of the up?down (Ising-like) symmetry breaking from the active-to-absorbing phase transition in low-dimensional systems.
Journal ArticleDOI
The cluster glass route of relaxor ferroelectrics
TL;DR: In this article, the mesoscopic cluster glass ground states are shown to have critical glass dynamics at Tg and stretched exponential relaxation, memory and rejuvenation upon aging below Tg.
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