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ID 25970
file
creator
Hosokawa, Shinya
Matsuda, Kazuhiro
Baron, Q.R. Alfred
NDC
Physics
abstract
High-frequency dynamics of liquid Te near the melting temperature has been investigated by the inelastic x-ray scattering measurements. Dynamic structure factors S(Q; E) are obtained at 500, 650 and 800 ±C. Acoustic excitation is ascertained at each temperature: its Q- dependent phase velocity v(Q) switches from high-frequency value vIXS to the ultrasonic value vs at some momentum transfer (Q = Qtrans). With decreasing temperature, both the positiveness (≡ (vIXS - vs)=vs) and the effective length (≡ 2π/Qtrans) increase, which means that the structural relaxation in liquid Te changes much in this temperature region. With the aid of the thermodynamic formulation, we show that it should be an evidence of the dynamical inhomogeneity: it can be much enhanced by the M-NM transition which exists in the supercooled region. The dynamical inhomogeneity may be induced by the second critical phenomena which is similar to liquid water.
journal title
Journal of Physics: Condensed Matter
volume
Volume 20
issue
Issue 49
start page
494244-1
end page
494244-7
date of issued
2008
publisher
IOP Publishing Ltd
issn
0953-8984
ncid
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
author
rights
Copyright (c) Institute of Physics and IOP Publishing Limited 2009.
relation url
department
Graduate School of Integrated Arts and Sciences



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