Low-energy modes in quasicrystalline and glassy : A comparative study by neutron inelastic scattering
- 6 July 1987
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 59 (1) , 102-105
- https://doi.org/10.1103/physrevlett.59.102
Abstract
In contrast to the strong difference observed in the static-structure factors of icosahedral and glassy PdSiU samples of their dynamical properties as reflected in their generalized vibrational density of states are nearly identical and quite different from that of the fully crystallized samples. Low-energy modes are detected in the generalized vibrational density of states of the icosahedral phase, which lead to an enhanced intensity at energies below 10 meV as compared to that of the crystallized samples. Also the wavelength dependence of the low-energy modes in icosahedral PdSiU is very similar to that in the metallic glass.Keywords
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