Transverse acoustic excitations in liquid Ga

S. Hosokawa, M. Inui, Y. Kajihara, K. Matsuda, T. Ichitsubo, W. C. Pilgrim, H. Sinn, L. E. González, D. J. González, S. Tsutsui, A. Q.R. Baron

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126 Citations (Scopus)


The transverse acoustic excitation modes were detected by inelastic x-ray scattering in liquid Ga in the Q range above 9nm-1 although liquid Ga is mostly described by a hard-sphere liquid. An ab initio molecular dynamics simulation clearly supports this finding. From the detailed analysis for the S(Q,ω) spectra with a good statistic quality, the lifetime of 0.5 ps and the propagating length of 0.4-0.5 nm can be estimated for the transverse acoustic phonon modes, which may correspond to the lifetime and size of cages formed instantaneously in liquid Ga.

Original languageEnglish
Article number105502
JournalPhysical Review Letters
Issue number10
Publication statusPublished - 2009 Mar 9


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