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Full Record Details
Persistent URL
http://purl.org/net/epubs/work/29435
Record Status
Checked
Record Id
29435
Title
Microscopic origin of the non-Gaussian behavior of dynamic structure factors of glassy matter
Contributors
C Cabrillo
,
M A González
,
G J Cuello
,
F J Bermejo
,
M L Saboungi
,
D L Price
Abstract
We consider the Lamb-Mössbauer factors corresponding to the structure factors of a material (ethyl alcohol) showing two glassy phases, one of those being an orientationally disordered crystal. The deviations from the idealized Gaussian behavior expected for an isotropic-harmonic vibrator within the amorphous phase and disordered crystal are found to be remarkably close. Such proximity enables us to take advantage of the crystal symmetry to gain access to specific details of the effective interparticle potential. Once this is done the treatment is extended to include the fully amorphous material. The results depict atomic motions within the glassy matrices as significantly anisotropic and highly anharmonic and thus provide a way to understand the microscopic origin of phenomena considered as fingerprints of glassy dynamics.
Organisation
CCLRC
,
ISIS
,
ISIS-MARI
,
ISIS-ILL
Keywords
Physics
,
Materials
,
ISIS 2004
Funding Information
Related Research Object(s):
Licence Information:
Language
English (EN)
Type
Details
URI(s)
Local file(s)
Year
Journal Article
Phys Rev B
69 (2004): 134202.
doi:10.1103/PhysRevB.69.134202
2004
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