Onset of transverse (shear) waves in strongly-coupled Yukawa fluids

Autor: Khrapak, S., Khrapak, A., Kryuchkov, N., Yurchenko, S.
Rok vydání: 2019
Předmět:
Zdroj: Journal of Chemical Physics 150, 104503 (2019)
Druh dokumentu: Working Paper
DOI: 10.1063/1.5088141
Popis: A simple practical approach to describe transverse (shear) waves in strongly-coupled Yukawa fluids is presented. Theoretical dispersion curves, based on hydrodynamic consideration, are shown to compare favorably with existing numerical results for plasma-related systems in the long-wavelength regime. The existence of a minimum wave number below which shear waves cannot propagate and its magnitude are properly accounted in the approach. The relevance of the approach beyond plasma-related Yukawa fluids is demonstrated by using experimental data on transverse excitations in liquid metals Fe, Cu, and Zn, obtained from inelastic x-ray scattering. Some potentially important relations, scalings, and quasi-universalities are discussed. The results should be interesting for a broad community in chemical physics, materials physics, physics of fluids and glassy state, complex (dusty) plasmas, and soft matter.
Comment: 9 pages, 6 figures, to be published in J. Chem. Phys. (2019)
Databáze: arXiv