Novel existence of collective propagating mode and strongly localized mode in vitreous silica

被引：26

作者：

Arai, M

Inamura, Y

Otomo, T

Kitamura, N

Bennington, SM

Hannon, AC

机构：

[1] KEK, Inst Mat Struct Sci, Tsukuba, Ibaraki 305, Japan

[2] Govt Ind Res Inst, Ikeda, Japan

[3] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England

来源：

PHYSICA B | 1999年 / 263卷

关键词：

phonon dispersion in vitreous silica;

D O I：

10.1016/S0921-4526(98)01354-4

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Neutron scattering studies in a wide range of energy-momentum space of vitreous silica have revealed for the first time that an acoustic phonon dispersion in quasi-Brillouin zones coexists with a localized mode, so-called the Boson peak, which penetrates through the dispersion in the low-energy region. The coexistence of these modes is likely an origin of the peculiar thermal properties of glassy system. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：268 / 272

页数：5

共 13 条

[1] ANOMALOUS LOW-TEMPERATURE THERMAL PROPERTIES OF GLASSES AND SPIN GLASSES [J].