Journal ArticleDOI
Models of hierarchically constrained dynamics for glassy relaxation
TLDR
In this paper, a class of models for relaxation in strongly interacting glassy materials is suggested, where degrees of freedom are divided into a sequence of levels such that those in level $n+1$ are locked except when some of those inlevel $n$ find the right combination to release them, representing the hierarchy of constraints in real systems.Abstract:
A class of models for relaxation in strongly interacting glassy materials is suggested. Degrees of freedom are divided into a sequence of levels such that those in level $n+1$ are locked except when some of those in level $n$ find the right combination to release them, this representing the hierarchy of constraints in real systems. The Kohlrausch anomalous relaxation law, $\mathrm{exp}[\ensuremath{-}{(\frac{t}{\ensuremath{\tau}})}^{\ensuremath{\beta}}]$, emerges naturally, and a maximum time scale is found which exhibits a Vogel-Fulcher-type temperature dependence.read more
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Journal ArticleDOI
Electrical transport and quasipersistent photocurrent in vanadium oxide nanowire networks
TL;DR: In this paper, electrical conductivity and photoconductivity measurements were carried out on semiconducting vanadium oxide nanowire networks synthesized through the polycondensation of vanadic acid.
Journal ArticleDOI
Colloidal particle adsorption at liquid interfaces: capillary driven dynamics and thermally activated kinetics
TL;DR: In this article, a Langevin model was proposed to describe the entire adsorption process of single colloidal particles by considering metastable states produced by surface defects and thermal motion of the particle and liquid interface.
Journal ArticleDOI
Cooperative or noncooperative dielectric relaxation in ionic solids: A discriminating experimental approach
TL;DR: In this paper, it was shown that the variation of thermally stimulated depolarization currents with the heating rate depends on the polarization decay function that is assumed, and that consideration of the kinetics involved in nonequilibrium TSDC spectroscopy is an essential and complementary, experimental tool for dielectric measurements carried out under isothermal conditions in the frequency domain.
Journal ArticleDOI
Stretched-Exponential Relaxation of Electric Birefringence in a Polydisperse Colloidal Solution
TL;DR: In this article, the relaxation of electronic birefringence has been measured in a polydisperse solution of rodlike ionic micelles of cetylpyridinium chloride.
Journal ArticleDOI
Magnetic and transport properties of Ba6Fe8S15 and BaFe2S3: Magnetoresistance in a spin-glass-like Fe(II) system
Z. Serpil Gönen,Patrick Fournier,Vera N. Smolyaninova,Richard L. Greene,Fernando M. Araújo-Moreira,Bryan W. Eichhorn +5 more
TL;DR: The magnetic and transport properties of the Hong and Steinfink 1-dimensional barium iron sulfide phases BaFe2S3 and Ba6Fe8S15 were studied in this paper.
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