Pressure-induced effects in the spectra of collective excitations in pure liquid metals - Université de Lorraine Accéder directement au contenu
Article Dans Une Revue Journal of Physics: Condensed Matter Année : 2020

Pressure-induced effects in the spectra of collective excitations in pure liquid metals

Résumé

Collective dynamics of metallic melts at high pressures is one of the open issues of condensed matter physics. By means of ab initio molecular dynamics simulations, we examine features of dispersions of collective excitations through transverse current spectral functions, as a function of pressure. Typical metallic melts, such as Li and Na monovalent metals as well as Al, Pb and In polyvalent metals are considered. We firmly establish the emergence of a second branch of high-frequency transverse modes with pressure in these metals, that we associate with the pronounced high-frequency shoulder in the vibrational density of states. Similar correlation also exist with the low frequency modes. The origin of the pressure-induced evolution of transverse excitations in liquid metals is discussed.
Fichier non déposé

Dates et versions

hal-02480810 , version 1 (17-02-2020)

Identifiants

Citer

T. Bryk, Taras Demchuk, Jean-François Wax, Noël Jakse. Pressure-induced effects in the spectra of collective excitations in pure liquid metals. Journal of Physics: Condensed Matter, 2020, 32 (18), pp.184002. ⟨10.1088/1361-648X/ab6a31⟩. ⟨hal-02480810⟩
40 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More