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
Hysteresis curves and magnetization processes in a model for an amorphous magnet with random uniaxial anisotropy
Mely Chen Chi,Richard Alben +1 more
TL;DR: In this paper, the magnetic field behavior of a simple model for an amorphous ferromagnet with random single-ion anisotropy was considered. And the results indicated that the canted aligned state is always more stable than low-moment spinglass-like states.
Journal ArticleDOI
On Larkin-Imry-Ma State of 3 He-A in Aerogel
Grigory Volovik,Grigory Volovik +1 more
TL;DR: In this paper, the Larkin-Imry-Ma (LIM) state is characterized by the short-range orientational order of the vector $\hat{\textbf{l}}$¯¯ �, while the long-range orientation order is destroyed by the collective action of the randomly oriented aerogel strings.
Journal ArticleDOI
Critical behavior induced by quenched disorder
TL;DR: This paper showed that all temperature-driven symmetry-breaking first-order phase transitions can be converted to second-order by quenched bond randomness, with an intervening new tricritical point.
Journal ArticleDOI
Monte Carlo investigation of the three-dimensional random-field three-state Potts model
Klaus Eichhorn,Kurt Binder +1 more
TL;DR: In this paper, the three-state Potts model with nearest ferromagnetic interaction J on the simple cubic lattice, exposed to a field which randomly favours one of the states, is studied by finite size scaling analysis of Monte Carlo simulations.
Journal ArticleDOI
The Dielectric Relaxation in Solid Solutions BaTi1-xZrxO3
TL;DR: In this article, the authors investigated the low frequency dielectric relaxation of BaTi 1 − x Zr x O 3 ceramics by means of spectroscopy and verified the ferroelectric state of compositions with x ≤ 0.20 by piezoresponse force microscopy.
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