Suppression of the critical current and the superfluid transition temperature of /sup 3/He in a single submicron cylindrical channel

Journal Article · Wed Apr 01 04:00:00 EST 1987 · J. Low Temp. Phys.; (United States)

DOI:https://doi.org/10.1007/BF01070649· OSTI ID:6060386

Pekola, J P; Davis, J C; Yu-Qun, Z; Spohr, R N.R.; Price, P B; Packard, R E

The authors report on an investigation into confined geometry effects and critical currents of superfluid /sup 3/He in a single circular cylindrical channel. The diameter of the channel, 0.7 ..mu..m, is of the order of the (temperature-dependent) coherence length and its aspect ratio is approx. 10. The reduction of the critical temperature demonstrates diffuse scattering on the solid walls of the microchannel. Using the Ginzburg-Landau formulation, they derive a model for the critical current and the critical temperature in a small, infinitely long, cylindrical channel with a circular cross section. The measured reductions of these quantities are in reasonable agreement with the predictions of the model.

• Research Organization: Univ. of California, Berkeley
• OSTI ID: 6060386
• Journal Information: J. Low Temp. Phys.; (United States), Journal Name: J. Low Temp. Phys.; (United States) Vol. 67:1-2; ISSN JLTPA
• Country of Publication: United States
• Language: English

Related Subjects

640450* -- Fluid Physics-- Superfluidity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
CALIFORNIUM 252
CALIFORNIUM ISOTOPES
CARBON COMPOUNDS
CARBONATES
COHERENCE LENGTH
CRITICAL CURRENT
CRITICAL FLOW
CURRENTS
DEMAGNETIZATION
DIMENSIONS
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
ENERGY DENSITY
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FISSION FRAGMENTS
FLUID FLOW
GAS FLOW
GEOMETRY
GINZBURG-LANDAU THEORY
HEAVY NUCLEI
HELIUM 3
HELIUM 4
HELIUM ISOTOPES
INHIBITION
ISOTOPES
LENGTH
LIGHT NUCLEI
LIQUID FLOW
MATHEMATICAL MODELS
MATHEMATICS
NUCLEAR FRAGMENTS
NUCLEI
ORDER PARAMETERS
OXYGEN COMPOUNDS
PARTICLE TRACKS
PHYSICAL PROPERTIES
POLYCARBONATES
QUASI PARTICLES
RADIOISOTOPES
ROUGHNESS
SCATTERING
STABLE ISOTOPES
SUPERCONDUCTIVITY
SUPERFLUIDITY
SURFACE PROPERTIES
TEST FACILITIES
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
ULTRALOW TEMPERATURE
YEARS LIVING RADIOISOTOPES