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
Critical phenomena in disordered systems
TL;DR: In this paper, the critical behavior of quenched magnetic alloys has been studied, including non-magnetic (or weak) impurities, tricritical points, alloys with competing symmetries, tetracritical points; ferromagnetic-antiferromagnetic alloys, spin glasses; random fields; etc.
Journal ArticleDOI
Domain formation in membranes with quenched protein obstacles: Lateral heterogeneity and the connection to universality classes
Timo Fischer,Richard L. C. Vink +1 more
TL;DR: It is shown that lateral fluidity in membranes containing quenched protein obstacles belongs to the universality class of the two-dimensional random-field Ising model, and provides a mechanism to stabilize lipid rafts in equilibrium.
Book ChapterDOI
Structure and Magnetic Properties of L10-Ordered Fe–Pt Alloys and Nanoparticles
TL;DR: The magnetic properties of the L 1 0 -based FePt alloys have been investigated in this paper, showing that they exhibit high coercivity due to high magnetocrystalline anisotropy (MCA).
Journal ArticleDOI
Studies of FeMn/Co/Cu(001) films using photoemission electron microscopy and surface magneto-optic Kerr effect
Changyeon Won,Yizheng Wu,H. W. Zhao,Andreas Scholl,Andrew Doran,W. Kim,T. Owens,Xiaofeng Jin,Z. Q. Qiu +8 more
TL;DR: In this paper, the density functional theory within the ultrasoft pseudopotentials and generalized gradient approximation was used to investigate water adsorption on ordered hydroxylated silica surfaces, which can be inferred from the shortened hydrogen-bond length, the vibrational spectra from the molecular dynamics simulation and the redistribution of electron density.
Journal ArticleDOI
Influence of electrical cycling on polarization reversal processes in Pb(Zn1/3Nb2/3)O3-PbTiO3 ferroelectric single crystals as a function of orientation
TL;DR: In this paper, the influence of prior exposure to electrical cycling on polarization switching as a function of electric field and driving frequency was studied in both orientations, and the field and frequency dependence of switching polarization can be described by a power law.
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Rounding of First-Order Phase Transitions in Systems with Quenched Disorder
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