Sound attenuation and anharmonic damping in solids with correlated disorder (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Sound attenuation and anharmonic damping in solids with correlated disorder (Articolo in rivista) (literal)

Anno

• 2010-01-01T00:00:00+01:00 (literal)

Alternative label

• Schirmacher, W; Tomaras, C; Schmid, B; Baldi, G; Viliani, G; Ruocco, G; Scopigno, T. (2010)
  Sound attenuation and anharmonic damping in solids with correlated disorder
  in Condensed matter physics
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Schirmacher, W; Tomaras, C; Schmid, B; Baldi, G; Viliani, G; Ruocco, G; Scopigno, T. (literal)

Pagina inizio

• 23606 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 13 (literal)

Rivista

• Condensed matter physics (Rivista)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• S.W.: Tech Univ Munich, Phys Dept E13, D-85747 Garching, Germany; S.W., S.B.: Johannes Gutenberg Univ Mainz, Fachbereich Phys, D-6500 Mainz, Germany; T.C.: Univ Munich, Arnold Sommerfeld Ctr Theoret Phys, D-80333 Munich, Germany; B.G., R.G., S.T.: IPCF-CNR, UOS Roma, I-00185 Rome, Italy; B.G.: ESRF Grenoble, Grenoble, France; V.G.: Univ Trent, Dipt Fis, Trento, Italy; R.G.; S.T.: Univ Roma, Dipt Fis, Rome, Italy (literal)

Titolo

• Sound attenuation and anharmonic damping in solids with correlated disorder (literal)

Abstract

• We study via self-consistent Born approximation a model for sound waves in a disordered environment, in which the local fluctuations of the shear modulus G are spatially correlated with a certain correlation length The theory predicts an enhancement of the density of states over Debye's omega(2) law (boson peak) whose intensity increases for increasing correlation length, and whose frequency position is shifted downwards as lg. Moreover, the predicted disorder-induced sound attenuation coefficient r(k) obeys a universal scaling law F(k) = f (ke) for a given variance of G. Finally, the inclusion of the lowest-order contribution to the anharmonic sound damping into the theory allows us to reconcile apparently contradictory recent experimental data in amorphous SiO(2). (literal)

Prodotto di

• MD.P01.024.001 Dinamica dei sistemi disordinati: materia soffice e biologica (MD.P01.024.002) (Modulo)
• Istituto per i processi chimico-fisici (IPCF) (Istituto)

Autore CNR

• GIACOMO BALDI (Unità di personale interno)
• TULLIO SCOPIGNO (Unità di personale interno)

Incoming links:

Prodotto

• Istituto per i processi chimico-fisici (IPCF) (Istituto)
• MD.P01.024.001 Dinamica dei sistemi disordinati: materia soffice e biologica (MD.P01.024.002) (Modulo)

Autore CNR di

• GIACOMO BALDI (Unità di personale interno)
• TULLIO SCOPIGNO (Unità di personale interno)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Condensed matter physics (Rivista)