Correlation between Boson Peaks and First Sharp Diffraction Peaks in Permanently Densified SiO_2 and GeO_2 Glass
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The correlation between the boson peak and the first diffraction peak, both of which are characteristic properties in amorphous material, was investigated on permanently densified SiO<SUB>2</SUB> and GeO<SUB>2</SUB> glass recovered from high pressures using Raman scattering and x-ray diffraction. The boson peak energy keeps inverse proportionality to the correlation length estimated from the width of the first sharp diffraction peak. Universality of this relation is pointed out for the application to other degree of freedom with short-range correlation, for example, a spin gap in a spin liquid state. A model for the boson peak and the first sharp diffraction peak is proposed.
- The Review of High Pressure Science and Technology
The Review of High Pressure Science and Technology 7, 700-702, 1998
The Japan Society of High Pressure Science and Technology