Scattering investigation of acoustic localization in fused silica

被引:187
|
作者
Foret, M [1 ]
Courtens, E [1 ]
Vacher, R [1 ]
Suck, JB [1 ]
机构
[1] TU CHEMNITZ ZWICKAU,INST PHYS,D-09107 CHEMNITZ,GERMANY
关键词
D O I
10.1103/PhysRevLett.77.3831
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Small angle neutron time-of-flight spectroscopy and inelastic x-ray scattering results are reported on the acoustic vibrations of fused silica. An expression for the dynamical structure factor is given that successfully describes the scattering from these vibrations, including the boson peak. The data analysis indicates an acoustic localization edge at congruent to 1 THz, in agreement with the position of the thermal conductivity plateau. Scattering results on another strong glass support the generality of our description.
引用
收藏
页码:3831 / 3834
页数:4
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