Acoustic nature of the boson peak in vitreous silica

被引：46

作者：

Masciovecchio, C

Mazzacurati, V

Monaco, G

Ruocco, G

Scopigno, T

Sette, F

Benassi, P

Cunsolo, A

Fontana, A

Krisch, M

Mermet, A

Montagna, M

Rossi, F

Sampoli, M

Signorelli, G

Verbeni, R

机构：

[1] European Synchrotron Radiat Facil, F-38043 Grenoble, France

[2] Univ Aquila, Dipartimento Fis, I-67100 Laquila, Italy

[3] Univ Aquila, Ist Nazl Fis Mat, I-67100 Laquila, Italy

[4] Univ Trento, Dipartimento Fis, I-38100 Trent, Italy

[5] Univ Trento, Ist Nazl Fis Mat, I-38100 Trent, Italy

[6] Univ Florence, Dipartimento Energet, I-50139 Florence, Italy

[7] Univ Florence, Ist Nazl Fis Mat, I-50139 Florence, Italy

来源：

PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES | 1999年 / 79卷 / 11-12期

关键词：

D O I：

10.1080/13642819908223089

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

New temperature-dependent inelastic X-ray scattering (IXS) and Raman scattering (RS) data are compared with each other and with existing inelastic neutron scattering (INS) data in vitreous silica, in the 300-1775 K region. The IXS data show collective propagating excitations up to Q = 3.5 nm(-1). The temperature behaviour of the excitations at Q = 1.6 nm(-1) matches that of the boson peak found in INS and RS. This supports the fact that the acoustic origin of the excess of vibrational states gives rise to the boson peak in this glass.

引用

页码：2013 / 2020

页数：8

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