Dispersion relations of the acoustic modes in divalent liquid metals

Masanori Inui, Yukio Kajihara, Koji Kimura, Kazuhiro Matsuda, Tetsu Miyatake, Ayano Chiba, Shinya Hosokawa, Satoshi Tsutsui, Alfred Q.R. Baron

Research output: Contribution to journalArticle

Abstract

Collective dynamics in liquid Ca and liquid Cd was studied by inelastic x-ray scattering (IXS). Using our experimental technique to prepare proper sample cells and high performance of an IXS beamline (BL35XU) at SPring-8 in Japan, the dynamic structure factor with reasonable statistics was obtained for these divalent liquid metals. For both liquids, the dynamic structure factor at low Q exhibits a central peak with a shoulder or small hump clearly visible on each side, and the inelastic excitation energy determined using the model function composed of Lorentzian and the damped harmonic oscillator function disperses with increasing Q. The dispersion curves of these liquids were compared with that of the longitudinal acoustic phonon in each crystalline phase. From these results, clear difference in the interatomic interaction be- tween liquid Ca and liquid Cd was inferred.

Original languageEnglish
Article number06002
JournalEPJ Web of Conferences
Volume151
DOIs
Publication statusPublished - 2017 Aug 21

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Inui, M., Kajihara, Y., Kimura, K., Matsuda, K., Miyatake, T., Chiba, A., Hosokawa, S., Tsutsui, S., & Baron, A. Q. R. (2017). Dispersion relations of the acoustic modes in divalent liquid metals. EPJ Web of Conferences, 151, [06002]. https://doi.org/10.1051/epjconf/201715106002