Neutron Scattering Evidence for Localized Soft Modes in Amorphous Polymers

U. Buchenau; Carlos Pecharromán; Reiner Zorn; B. Frick

doi:10.1103/physrevlett.77.659

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Neutron Scattering Evidence for Localized Soft Modes in Amorphous Polymers

U. Buchenau Carlos Pecharromán Reiner Zorn B. Frick

Year: 1996 Journal: Physical Review Letters Vol: 77 (4)Pages: 659-662 Publisher: American Physical Society

DOI: 10.1103/physrevlett.77.659

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Abstract

The localization of low-frequency vibrational modes in amorphous solids can be determined from incoherent neutron scattering. Time-of-flight data from polystyrene and polybutadiene show a localization of the boson peak modes to about ten monomers.

Keywords:

Amorphous solid Neutron scattering Materials science Polybutadiene Scattering Neutron Polystyrene Polymer Small-angle neutron scattering Quasielastic neutron scattering Molecular physics Inelastic neutron scattering Condensed matter physics Physics Nuclear physics Optics Crystallography Chemistry Composite material

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Material Dynamics and Properties

Physical Sciences → Materials Science → Materials Chemistry

Spectroscopy and Quantum Chemical Studies

Physical Sciences → Physics and Astronomy → Atomic and Molecular Physics, and Optics

Quantum, superfluid, helium dynamics

Physical Sciences → Physics and Astronomy → Atomic and Molecular Physics, and Optics

Neutron Scattering Evidence for Localized Soft Modes in Amorphous Polymers

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