Kosterlitz-Thouless superfluid transition for helium in packed powders
Journal Article
·
· Phys. Rev. Lett.; (United States)
A model is presented for the Kosterlitz-Thouless superfluid transition of helium films adsorbed on the surface of a sphere. As the sphere diameter is reduced to grain sizes used in experiments the sharp ''jump'' to zero of the areal superfluid density is broadened and becomes continuous. The model is applied to third-sound measurements in packed alumina powders, and values of the core energy and core radius of the paired vortices are extracted.
- Research Organization:
- Physics Department, University of California, Los Angeles, California 90024
- OSTI ID:
- 6622351
- Journal Information:
- Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 53:7; ISSN PRLTA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
640450* -- Fluid Physics-- Superfluidity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
CRYSTAL STRUCTURE
DATA
DENSITY
DIMENSIONS
ELEMENTS
FILMS
FLUIDS
GASES
GRAIN SIZE
HELIUM
INFORMATION
MATHEMATICAL MODELS
MICROSTRUCTURE
NONMETALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POROSITY
POWDERS
RARE GASES
RENORMALIZATION
SIZE
SPHERES
SUBSTRATES
SUPERFLUIDITY
TEMPERATURE DEPENDENCE
THEORETICAL DATA
THICKNESS
THIN FILMS
THIRD SOUND
ULTRALOW TEMPERATURE
USES
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
CRYSTAL STRUCTURE
DATA
DENSITY
DIMENSIONS
ELEMENTS
FILMS
FLUIDS
GASES
GRAIN SIZE
HELIUM
INFORMATION
MATHEMATICAL MODELS
MICROSTRUCTURE
NONMETALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POROSITY
POWDERS
RARE GASES
RENORMALIZATION
SIZE
SPHERES
SUBSTRATES
SUPERFLUIDITY
TEMPERATURE DEPENDENCE
THEORETICAL DATA
THICKNESS
THIN FILMS
THIRD SOUND
ULTRALOW TEMPERATURE
USES