Orientational ordering in incommensurate solid helium monolayers on graphite

Journal Article · Sat Aug 01 04:00:00 EDT 1981 · J. Low Temp. Phys.; (United States)

DOI:https://doi.org/10.1007/BF00120782· OSTI ID:5936519

Greif, J M; Goodstein, D L

We calculate the size and energy of distortions of solid /sup 3/He and /sup 4/He monolayers produced by the periodic potential of a graphite substrate, as a function of relative orientation angle of the incommensurate adsorbate and substrate lattices, using experimental elastic parameters of the monolayers, Fourier components of the substrate potential obtained from atomic scattering, and a phenomenological treatment of adsorbate phonons. We also predict the restoring force against relative twist of the two lattices, a parameter needed in analyzing the melting transition.

• Research Organization: Sloan Laboratory, California Institute of Technology, Pasadena, California
• DOE Contract Number: AM03-76SF00767
• OSTI ID: 5936519
• Journal Information: J. Low Temp. Phys.; (United States), Journal Name: J. Low Temp. Phys.; (United States) Vol. 44:3; ISSN JLTPA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360602* -- Other Materials-- Structure & Phase Studies
ADSORPTION
BRILLOUIN ZONES
CARBON
ELASTICITY
ELEMENTS
FLUIDS
GASES
GRAPHITE
HELIUM
LAYERS
MECHANICAL PROPERTIES
MELTING
NONMETALS
PHASE TRANSFORMATIONS
PHONONS
QUASI PARTICLES
RARE GASES
SORPTION
SORPTIVE PROPERTIES
SUBSTRATES
SURFACE PROPERTIES
TENSILE PROPERTIES
ZONES