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Persistent URL http://purl.org/net/epubs/work/49554
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Record Id 49554
Title Dispersion relation of an OH-stretching vibration from inelastic x-ray scattering
Abstract We show that recent advances now allow us to measure the wave vector dependence of OH-stretching frequencies at energies around 400 meV by inelastic x-ray scattering using ID28@ESRF. We found a large, unexpected dispersion when we measured the dispersion relations of the hydrogen stretching frequencies of diaspore, alpha-AlOOH, where the hydrogen atoms participate in a hydrogen bond of intermediate strength. We can account for this behavior with density functional perturbation theory calculations and a simple model based on H-H interactions.
Organisation CSE , CSE-CMSG , STFC
Keywords density-functional theory , Physics , 63.20 , IXS
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Language English (EN)
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Journal Article Phys Rev Lett 101, no. 6 (2008): 065501. doi:10.1103/PhysRevLett.101.065501 2008