Temperature dependence of mode-coupling effects in liquid sodium

Montfrooy, W; Schepper, De; Bosse, J.; Gläser, W.; Morkel, C.

doi:10.1103/physreva.33.1405

Cited by 35 publications

(20 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Their values b = 0.0526 Å and a = 0.0969 Å are respectively about 15% and 17% above those reported for liquid Na at an equivalent temperature, where modecoupling effects are known to be already strong. 17 Data pertaining to the coherent dynamic structure factor are shown in Fig. 3.…”

Section: A Experimentsmentioning

confidence: 99%

Stochastic dynamics in molten potassium explored by polarized quasielastic neutron scattering

Ruiz-Martín¹,

Jiménez‐Ruiz²,

Stunault³

et al. 2007

Phys. Rev. B

View full text Add to dashboard Cite

The coherent S c ͑Q , ͒ and single-particle S s ͑Q , ͒ dynamic structure factors which contribute to the lowenergy spectrum of molten potassium are separated by means of neutron polarization analysis. The linewidth and amplitude of the single-particle spectra follow an apparent sub-Fickian behavior, with a diffusion coefficient below the value found by macroscopic means. Once this is accounted for, the results are found to conform with predictions made from kinetic theory. Also, the available theoretical recipes to account for the coherent quasielastic intensity are seen to reproduce the experimental observations within a region of momentum transfers located about the location where the static structure factor shows its main peak. From the measured data as well as from computer simulation results which are validated by comparison to measurement, a clear separation of time scales involving rapid rattling motions within the liquid cages from diffusional processes involving collective or single-particle rearrangements is established.

show abstract

Section: A Experimentsmentioning

confidence: 99%

Stochastic dynamics in molten potassium explored by polarized quasielastic neutron scattering

Ruiz-Martín¹,

Jiménez‐Ruiz²,

Stunault³

et al. 2007

Phys. Rev. B

View full text Add to dashboard Cite

show abstract

“…52. In both equations the first term is the hydrodynamic result and the second one accounts for the coupling of mass diffusion with the collective modes.…”

Section: Single-particle Dynamicsmentioning

confidence: 99%

Structural and dynamical properties of liquid Si: An Orbital-free molecular dynamics study

2006

View full text Add to dashboard Cite

Several static and dynamic properties of liquid silicon near melting have been determined from an orbital free ab-initio molecular dynamics simulation. The calculated static structure is in good agreement with the available X-ray and neutron diffraction data. The dynamical structure shows collective density excitations with an associated dispersion relation which closely follows recent experimental data. It is found that liquid silicon can not sustain the propagation of shear waves which can be related to the power spectrum of the velocity autocorrelation function. Accurate estimates have also been obtained for several transport coefficients. The overall picture is that the dynamic properties have many characteristics of the simple liquid metals although some conspicuous differences have been found.

show abstract

“…An additional check on the reliability of these results may be provided by the MC theory 39,40 which has already shown its capability to describe to experimental data for ∆(q) and Σ(q) in simple liquid metals 38,41 at q ≤ q p . Specifically, the MC theory avers that at low-q values…”

Section: Single-particle Dynamicsmentioning

confidence: 99%

Pressure-induced structural and dynamical changes in liquid Si—anab initiostudy

Delisle

González

Stott

2006

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

The static and dynamic properties of liquid Si at high-pressure have been studied using the orbital free ab-initio molecular dynamics method. Four thermodynamic states at pressures of 4, 8, 14 and 24 GPa are considered, for which X-ray scattering data are available. The calculated static structure shows qualitative agreement with the available experimental data. We analize the remarkable structural changes occurring between 8 and 14 GPa along with its reflection into several dynamic properties.

show abstract

Temperature dependence of mode-coupling effects in liquid sodium

Cited by 35 publications

References 21 publications

Stochastic dynamics in molten potassium explored by polarized quasielastic neutron scattering

Stochastic dynamics in molten potassium explored by polarized quasielastic neutron scattering

Structural and dynamical properties of liquid Si: An Orbital-free molecular dynamics study

Pressure-induced structural and dynamical changes in liquid Si—anab initiostudy

Contact Info

Product

Resources

About