Glass-transition properties of Yukawa potentials: From charged point particles to hard spheres

Yazdi, Anoosheh; Ivlev, A. V.; Khrapak, S. A.; Thomas, Hubertus M.; Morfill, G. E.; Löwen, Hartmut; Wysocki, Adam; Sperl, Matthias

doi:10.1103/physreve.89.063105

Cited by 28 publications

(56 citation statements)

References 33 publications

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“…One-component 3D Wigner glasses formed from spherically symmetric particles have been theoretically predicted and studied at large volume fractions, where they are stabilized by packing constraints [156]. They were further studied at low volume fractions where they form due to the long ranged electrostatic repulsion [157,158,159,160 ]. The glasses formed here were observed at volume fractions as low as  = 0.004 under exhaustively deionized conditions.…”

Section: Discussionmentioning

confidence: 99%

To make a glass—avoid the crystal

Palberg¹,

Bartsch²,

Beyer³

et al. 2016

J. Stat. Mech.

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Colloidal model systems allow for a flexible tuning of particle sizes, particle spacings and mutual interactions at constant temperature. Colloidal suspensions typically crystallize as soon as the interactions get sufficiently strong and long-ranged. Several strategies have been successfully applied to avoid crystallization and instead produce colloidal glasses. Most of these amorphous solids are formed at high particle concentrations. This paper shortly reviews experimental attempts to produce amorphous colloidal solids using strategies based on topological, thermodynamic and kinetic considerations. We complement this overview by introducing a (transient) amorphous solid forming in a thoroughly deionized aqueous suspension of highly charged spheres at low salt concentration and very low volume fractions.

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Section: Discussionmentioning

confidence: 99%

To make a glass—avoid the crystal

Palberg¹,

Bartsch²,

Beyer³

et al. 2016

J. Stat. Mech.

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“…Here the constant α = (4π/3) of a glass phase on the phase diagram of Yukawa systems have been investigated. 21,22 This regime is not considered below, the attention is focused on the strongly coupled fluid phase.…”

Section: Background Informationmentioning

confidence: 99%

Practical formula for the shear viscosity of Yukawa fluids

Khrapak

2018

AIP Advances

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A simple practical formula for the shear viscosity coefficient of Yukawa fluids is presented. This formula allows estimation of the shear viscosity in a very extended range of temperatures, from the melting point to 100 times the melting temperature. It demonstrates reasonable agreement with the available results from molecular dynamics simulations. Some aspects of the temperature dependence of the shear viscosity and diffusion coefficients on approaching the fluid-solid phase transition are discussed.

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“…If Yukawa fluid is quickly cooled down to even lower temperatures, a Yukawa glass may form. The glass-transition line appears to be almost parallel to the melting line in the extended region of the phase diagram [22,23]. For the Yukawa potential the Einstein frequency is trivially related to the internal excess energy, which is relatively well known analytically.…”

Section: Formulationmentioning

confidence: 79%

Self-diffusion in single-component Yukawa fluids

2018

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It was suggested in the literature that the self-diffusion coefficient of simple fluids can be approximated as a ratio of the squared thermal velocity of the atoms to the 'fluid Einstein frequency,' which can thus serve as a rough estimate of the friction (momentum transfer) rate in the dense fluid phase. In this article we test this suggestion using a single-component Yukawa fluid as a reference system. The available simulation data on self-diffusion in Yukawa fluids, complemented with new data for Yukawa melts (Yukawa fluids near the freezing phase transition), are carefully analyzed. It is shown that although not exact, this earlier suggestion nevertheless provides a very sensible way of normalization of the self-diffusion constant. Additionally, we demonstrate that certain quantitative properties of self-diffusion in Yukawa melts are also shared by systems like one-component plasma and liquid metals at freezing, providing support to an emerging dynamical freezing indicator for simple soft matter systems. The obtained results are also briefly discussed in the context of the theory of momentum transfer in complex (dusty) plasmas.

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Glass-transition properties of Yukawa potentials: From charged point particles to hard spheres

Cited by 28 publications

References 33 publications

To make a glass—avoid the crystal

To make a glass—avoid the crystal

Practical formula for the shear viscosity of Yukawa fluids

Self-diffusion in single-component Yukawa fluids

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