Origin of low-frequency local vibrational modes in high density amorphous ice

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DOIResolve DOI: http://doi.org/10.1103/PhysRevLett.85.3185
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TypeArticle
Journal titlePhysical Review Letters
Volume85
Issue15
Pages31853188; # of pages: 4
AbstractIncoherent-inelastic neutron scattering data are obtained from 5�80 K for high-density amorphous (hda) ice in the region 0�135 cm-1. An excess contribution to the vibrational density of states is identified near 20 cm-1. The origin of these vibrations has been identified by lattice dynamics calculations on an �experimental� structure derived from reverse Monte Carlo analysis of hda ice neutron diffraction data. An interpretation that localized oscillations of short chains and isolated water molecules are responsible for the excess low-frequency modes is consistent with our data.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada; NRC Steacie Institute for Molecular Sciences
Peer reviewedNo
NPARC number12337965
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Record identifier8f22872a-682c-470e-871f-6c46a990d690
Record created2009-09-10
Record modified2016-05-09
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