Direct measurement of vortex diffusivity in thin films of /sup 4/He

Journal Article · Mon Jul 07 04:00:00 EDT 1986 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.57.82· OSTI ID:5380648

Adams, P W; Glaberson, W I

We report direct measurements of vortex diffusivity, D-italic, as a function of temperature through the Kosterlitz-Thouless transition. We find that D-italic is a rapidly varying function of temperature near the transition. It is very small well below the transition, increases to --h-dash-bar/m-italic at the static transition temperature, and apparently diverges at the point where the superfluid density vanishes. The diffusivity appears to be insensitive to the presence of /sup 3/He impurities and to the nature of the substrate.

• Research Organization: Serin Physics Laboratory, Rutgers University, Piscataway, New Jersey 08854
• OSTI ID: 5380648
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 57:1; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

640450* -- Fluid Physics-- Superfluidity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
DATA
DIMENSIONS
ENERGY LOSSES
EVEN-EVEN NUCLEI
EXPERIMENTAL DATA
FILMS
HELIUM 4
HELIUM ISOTOPES
INFORMATION
ISOTOPES
LIGHT NUCLEI
LOSSES
NUCLEI
NUMERICAL DATA
STABLE ISOTOPES
TEMPERATURE DEPENDENCE
THICKNESS
THIN FILMS
VORTICES