Propagation of plane-wave vibrational excitations in disordered systems

被引：69

作者：

Taraskin, SN ^{[1
]}

Elliott, SR ^{[1
]}

机构：

[1] Univ Cambridge, Dept Chem, Cambridge CB2 1EW, England

来源：

PHYSICAL REVIEW B | 2000年 / 61卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.61.12017

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The propagational behavior of vibrational plane waves in a disordered medium has been analyzed theoretically in the time and frequency domains and in terms of the final scattered state in momentum space. Numerical results have been obtained for a normal-mode analysis of models of vitreous silica constructed by molecular dynamics, and also for a simple model of a zigzag chain of atoms with force-constant disorder.

引用

页码：12017 / 12030

页数：14

共 59 条

[1] Evolution of a vibrational wave packet on a disordered chain [J].

Allen, PB ;

Kelner, J .

AMERICAN JOURNAL OF PHYSICS, 1998, 66 (06) :497-506

[2] THERMAL-CONDUCTIVITY OF DISORDERED HARMONIC SOLIDS [J].

ALLEN, PB ;

FELDMAN, JL .

PHYSICAL REVIEW B, 1993, 48 (17) :12581-12588

[3] High-frequency dynamics in a molten binary alloy [J].

Alvarez, M ;

Bermejo, FJ ;

Verkerk, P ;

Roessli, B .

PHYSICAL REVIEW LETTERS, 1998, 80 (10) :2141-2144

[4] Evidence of high frequency propagating modes in vitreous silica [J].

Benassi, P ;

Krisch, M ;

Masciovecchio, C ;

Mazzacurati, V ;

Monaco, G ;

Ruocco, G ;

Sette, F ;

Verbeni, R .

PHYSICAL REVIEW LETTERS, 1996, 77 (18) :3835-3838

[5] Is the fast process at the glass transition mainly due to long wavelength excitations? [J].

Buchenau, U ;

Wischnewski, A ;

Richter, D ;

Frick, B .

PHYSICAL REVIEW LETTERS, 1996, 77 (19) :4035-4038

[6] INTERACTION OF SOFT MODES AND SOUND-WAVES IN GLASSES [J].

BUCHENAU, U ;

GALPERIN, YM ;

GUREVICH, VL ;

PARSHIN, DA ;

RAMOS, MA ;

SCHOBER, HR .

PHYSICAL REVIEW B, 1992, 46 (05) :2798-2808

[7] Neutron scattering evidence for localized soft modes in amorphous polymers [J].

Buchenau, U ;

Pecharroman, C ;

Zorn, R ;

Frick, B .

PHYSICAL REVIEW LETTERS, 1996, 77 (04) :659-662

[8]

DEDERICHS PH, 1980, POINT DEFECTS METALS, V2

[9] High frequency sounds waves in vitreous silica [J].

Dell'Anna, R ;

Ruocco, G ;

Sampoli, M ;

Viliani, G .

PHYSICAL REVIEW LETTERS, 1998, 80 (06) :1236-1239

[10] Floppy modes in crystalline and amorphous silicates [J].

Dove, MT ;

Harris, MJ ;

Hannon, AC ;

Parker, JM ;

Swainson, IP ;

Gambhir, M .

PHYSICAL REVIEW LETTERS, 1997, 78 (06) :1070-1073

← 1 2 3 4 5 6 →