Brillouin scattering from isotropic metals

Dil, Jan G.; Brody, Edward M.

doi:10.1103/physrevb.14.5218

Cited by 52 publications

(14 citation statements)

References 7 publications

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“…It is also interesting to observe that the Brillouin light scattering experiment of Ref. 21 provided quite a large value for the mode velocity, although, because of the severe limitations of this technique in the case of metals, the results could be affected by surface effects. At high temperature, the inelastic structures of the neutron spectra appear at slightly lower energy and seem to be better defined.…”

Section: Methodsmentioning

confidence: 97%

Vibrational dynamics of liquid gallium at 320 and970K

et al. 2005

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The microscopic ion dynamics of liquid gallium was investigated at 320 K-that is, just above the melting point-and 970 K by inelastic neutron scattering experiments and molecular dynamics simulations. The high quality of the experimental data allowed the observation of density fluctuation modes extending up to 1.0 Å −1 and existing at both temperatures. At melting, an acousticlike mode propagating with a velocity definitely exceeding the sound velocity was observed, in agreement with the results of a recent inelastic x-ray scattering experiment. The mode velocity and damping were found to be almost temperature independent. The experimental response function was compared with the results of a molecular dynamics simulation, based on a simple model for the effective ion-ion potential which, however, did not contain any temperature-dependent parameter. The result worth noting is that, despite the simple potential, the simulation was capable to reproduce all the observed features of the measured dynamicstructure factor quantitatively and at both the temperatures.

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Section: Methodsmentioning

confidence: 97%

Vibrational dynamics of liquid gallium at 320 and970K

et al. 2005

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“…Experimental studies performed with semiconductor layers supported by metals, have confirmed the importance of adding the elasto-optic contribution to fully interpret the observed spectral features (Sandercock 1978;Loudon and Sandercock 1980). Finally, theoretical studies have been carried out to predict the intensity of surface Brillouin scattering in dielectric and metallic liquids (Dil and Brody 1976;Albuquerque 1983) and the results have been utilized to interpret existing experimental results on alcohols, mercury and gallium (Dil and Brody 1976;Visser et al 1984).…”

Section: Measurements Of Surface Brillouin Scattering On Opaque Matermentioning

confidence: 78%

Brillouin Scattering and its Application in Geosciences

Speziale

Marquardt

Duffy

2014

Reviews in Mineralogy and Geochemistry

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“…Because of the small sample size and the effects of spurious scattering from the cell, considerable effort must be expended to resolve the weak Brillouin components from the much stronger elastic peak. This is accomplished by multipassing the laser through the interferometer (22). A number of minerals important to geophysics have been studied by Brillouin scattering techniques under ambient conditions, principally by Weidner and colleagues (23).…”

Section: Brillouin Scatteringmentioning

confidence: 99%

“…(Left) Coesite, a high-pressure polymorph. Note the change in the spectrum between22 and 25 GPa, indicative of a phase transition, and the increase in diffuse scatter in the highest pressure spectrum due to pressure-induced amorphization [reprinted…”

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confidence: 99%

Laser Techniques in High-Pressure Geophysics

Hemley

Bell

Mao

1987

Science

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Laser techniques in conjunction with the diamond-anvil cell can be used to study high-pressure properties of materials important to a wide range of problems in earth and planetary science. Spontaneous Raman scattering of crystalline and amorphous solids at high pressure demonstrates that dramatic changes in structure and bonding occur on compression. High-pressure Brillouin scattering is sensitive to the pressure variations of single-crystal elastic moduli and acoustic velocities. Laser heating techniques with the diamond-anvil cell can be used to study phase transitions, including melting, under deep-earth conditions. Finally, laser-induced ruby fluorescence has been essential for the development of techniques for generating the maximum pressures now possible with the diamond-anvil cell, and currently provides a calibrated in situ measure of pressure well above 100 gigapascals.

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Brillouin scattering from isotropic metals

Cited by 52 publications

References 7 publications

Vibrational dynamics of liquid gallium at 320 and970K

Vibrational dynamics of liquid gallium at 320 and970K

Brillouin Scattering and its Application in Geosciences

Laser Techniques in High-Pressure Geophysics

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