Phonons in solid argon monolayers

Journal Article · Mon Jan 15 04:00:00 EST 1990 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.41.1640· OSTI ID:7007249

Hakim, T M ^[1]; Glyde, H R ^[2]

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1. Department of Physics, Jacksonville University, Jacksonville, Florida 32211 (US)
2. Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716 (USA)

Inelastic neutron scattering studies of excitations in {sup 36}Ar solid monolayers show a large thermal broadening of the scattered intensity between {ital T}=4 and 45 K. We find this thermal broadening can be readily explained in terms of anharmonic interactions between the phonons in the monolayers. The phonon energies and lifetimes, calculated using the self-consistent phonon theory, are also very sensitive to the nearest-neighbor spacing {ital a}{sub NN} as well as temperature. For {ital a}{sub NN}{approx gt}3.98 A, the floating monolayer is predicted to be mechanically unstable to vibration.

• DOE Contract Number: FG02-84ER45082
• OSTI ID: 7007249
• Journal Information: Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 41:3; ISSN PRBMD; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ADSORPTION
ARGON
CARBON
COHERENT SCATTERING
DIFFRACTION
ELEMENTAL MINERALS
ELEMENTS
FLUIDS
GASES
GRAPHITE
INELASTIC SCATTERING
LAYERS
MINERALS
NEUTRON DIFFRACTION
NONMETALS
PHONONS
QUASI PARTICLES
RARE GASES
SCATTERING
SORPTION
STRUCTURE FACTORS
TEMPERATURE DEPENDENCE
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE