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Literature DB >> 10990942

Hyper-raman scattering observation of the boson peak in vitreous silica

Abstract

Hyper-Raman spectroscopy is used to investigate low frequency vibrations of various silica glasses. A strong boson peak is observed. The corresponding modes are inactive in infrared and Raman spectra, and are nonacoustic in nature. The shape of this boson peak essentially matches the total density of vibrational states (DOS), with a constant coupling coefficient C. This and other indications suggest that these modes actually dominate the DOS of silica.

Entities: Chemical

Year: 2000 PMID： 10990942 DOI： 10.1103/PhysRevLett.84.5355

Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161

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Cited

5 in total

1. Anomalous properties of the acoustic excitations in glasses on the mesoscopic length scale.

Authors: Giulio Monaco; Stefano Mossa
Journal: Proc Natl Acad Sci U S A Date: 2009-09-23 Impact factor: 11.205

2. Four-wave mixing experiments with extreme ultraviolet transient gratings.

Authors: F Bencivenga; R Cucini; F Capotondi; A Battistoni; R Mincigrucci; E Giangrisostomi; A Gessini; M Manfredda; I P Nikolov; E Pedersoli; E Principi; C Svetina; P Parisse; F Casolari; M B Danailov; M Kiskinova; C Masciovecchio
Journal: Nature Date: 2015-04-09 Impact factor: 49.962

Hyper-raman scattering observation of the boson peak in vitreous silica

1. Anomalous properties of the acoustic excitations in glasses on the mesoscopic length scale.

2. Four-wave mixing experiments with extreme ultraviolet transient gratings.

3. THz Acoustic Spectroscopy by using Double Quantum Wells and Ultrafast Optical Spectroscopy.

4. Local Deformation of Glasses is Mediated by Rigidity Fluctuation on Nanometer Scale.

5. The Proton Density of States in Confined Water (H₂O).

Hyper-raman scattering observation of the boson peak in vitreous silica

1. Anomalous properties of the acoustic excitations in glasses on the mesoscopic length scale.

2. Four-wave mixing experiments with extreme ultraviolet transient gratings.

3. THz Acoustic Spectroscopy by using Double Quantum Wells and Ultrafast Optical Spectroscopy.

4. Local Deformation of Glasses is Mediated by Rigidity Fluctuation on Nanometer Scale.

5. The Proton Density of States in Confined Water (H2O).

5. The Proton Density of States in Confined Water (H₂O).