Relaxation of a supercooled low-density Coulomb fluid

Wilke, S.; Bosse, J.

doi:10.1103/physreve.59.1968

Cited by 15 publications

(18 citation statements)

References 20 publications

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“…Data presented in the previous figures show that a MCT description of the dynamics can be applied for T * > T * c and that the qualitative relaxation behavior is of the usual "type-B" variety [25], in agreement with the predictions of Bosse and Wilke [23,24]. While we postpone a detailed exposition for a future publication, it should be noted that features such the violation of the Stokes-Einstein relation, the growth of the non-Gaussian parameter and multi-point dynamical susceptibilities also occur in our simulated system.…”

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confidence: 78%

Numerical Investigation of Glassy Dynamics in Low-Density Systems

et al. 2008

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Vitrification in colloidal systems typically occurs at high densities driven by sharply varying, short-ranged interactions. The possibility of glassy behavior arising from smoothly varying, longranged particle interactions has received relatively little attention. Here we investigate the behavior of screened charged particles, and explicitly demonstrate that these systems exhibit glassy properties in the regime of low temperature and low density. Properties close to this low density (Wigner) glass transition share many features with their hard-sphere counterparts, but differ in quantitative aspects that may be accounted for via microscopic theoretical considerations.PACS numbers: 64.70. Pf, 61.20.Lc, 82.70.Dd The origins of the precipitous slowing down of dynamics in supercooled liquids are still unclear even after many decades of intense scrutiny. Model systems often form the basis for detailed investigations that include the core features known to give rise to generic glassy behavior. Perhaps the most prominent example of such a model system is the hard-sphere suspension, which has served as the basis for numerous experimental, theoretical and computational studies of the glass transition [1,2,3]. Many of the most interesting properties of supercooled liquids and glasses, including two-step relaxation, stretched exponential decay of density correlations and dynamic heterogeneities occur in hard-sphere systems [4,5,6].While the glass transition of hard-spheres has become a paradigm for vitrification at high densities, serving as a reference point for conceptual attempts to connect the behavior of physically diverse classes of disordered arrested states of matter, another physically important limit of glassy systems has received much less systematic scrutiny. This limit is that of a dilute assembly of particles interacting via long-ranged, soft repulsive forces such as those arising in charged systems. Over twenty years ago Chaikin and coworkers [7,8] investigated the phase behavior of dilute suspensions of charged colloids. Low density glasses stabilized by Coulomb repulsion were called "Wigner glasses" [7]. At that time a detailed investigation of the structure and dynamics of these suspensions was not carried out. Hints of glassy behavior in one component plasmas have also been noted [9], and the notion of a Wigner glass has been revived in colloidal systems [10,11,12,13] due to recent activity focusing on physical gelation in charged systems [14,15,16,17,18]. Indeed, the study of glassy properties of dilute Coulomb systems has consequences that reach beyond classical systems and may shed light on routes to the formation of glasses in electronic systems [19,20], where glassy effects might persist even in the limit of weak to vanishing quenched disorder [21]. Such self-induced glassiness results from electron-electron interactions, an effect analogous to classical Wigner glass formation in colloidal systems.Similar to the experimental situation, few theoretical investigations of the emergence of glassy dyna...

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confidence: 78%

Numerical Investigation of Glassy Dynamics in Low-Density Systems

et al. 2008

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“…An interesting result in our calculations is the observation of the transition from the liquid ¢ glass ¢ liquid ¢ glass (LGLG) re-entrant phenomenon in a restrictive region of the concentration of counterions to the GLG behavior at a lower concentration. A similar re-entrant phenomenon has recently been predicted by Wilke and Bosse [11] for an ionic glass.…”

Section: Introductionsupporting

confidence: 84%

Liquid-glass re-entrant behavior in a charge-stabilized colloidal dispersion

Wang

Lai

2002

Journal of Non-Crystalline Solids

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“…The limit of the HSS emerges from that calculations without actual excluded volume in the potentials. With the important difference of a finite hard-sphere radius being present, the possibility that in addition to a Coulomb crystal a dilute system of charges may also form a Coulomb glass was explored in the restricted primitive model for a mixture of charged hard spheres [30] and the hard-sphere jellium model [31] as well as for a system of charged hard spheres to describe charge-stabilized colloidal suspensions [32]. In conclusion, the present calculations offer exhaustive analyti-cal descriptions for glass transitions over a wide range of quite different interaction potentials.…”

Section: Discussionmentioning

confidence: 99%

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

et al. 2014

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The glass transition is investigated in three dimensions for single and double Yukawa potentials for the full range of control parameters. For vanishing screening parameter, the limit of the onecomponent plasma is obtained; for large screening parameters and high coupling strengths, the glass-transition properties crossover to the hard-sphere system. Between the two limits, the entire transition diagram can be described by analytical functions. Different from other potentials, the glass-transition and melting lines for Yukawa potentials are found to follow shifted but otherwise identical curves in control-parameter space.

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Relaxation of a supercooled low-density Coulomb fluid

Cited by 15 publications

References 20 publications

Numerical Investigation of Glassy Dynamics in Low-Density Systems

Numerical Investigation of Glassy Dynamics in Low-Density Systems

Liquid-glass re-entrant behavior in a charge-stabilized colloidal dispersion

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

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