Anisotropic gap distortion due to superflow and the depairing critical current in superfluid /sup 3/He-B

Journal Article · Tue Apr 01 04:00:00 EST 1980 · J. Low Temp. Phys.; (United States)

DOI:https://doi.org/10.1007/BF00118066· OSTI ID:5296159

Volhardt, D; Maki, K; Schopohl, N

We have calculated the pair-breaking critical current for superfluid /sup 3/He-B at all temperatures by taking into account the anisotropic distortion of the order parameter in the presence of superflow. We find that the component of the order parameter along the flow ..delta../sub parallel/ is strongly reduced, while ..delta../sub perpendicular/, the component perpendicular to the flow, slightly increases. The superfluid density rho/sub s/ has also been determined as a function of the superfluid velocity V/sub s/. Fermi liquid corrections are explicitly included and it is shown that these corrections lead to a drastic change in the functional dependence of ..delta../sub parallel/, ..delta../sub perpendicular/, rho/sub s/, etc., on v/sub s/. In contrast to this, the pair-breaking critical current is shown to be independent of the Fermi liquid corrections.

• Research Organization: double-daggerepartment of Physics, University of Southern California, Los Angeles, California
• OSTI ID: 5296159
• Journal Information: J. Low Temp. Phys.; (United States), Journal Name: J. Low Temp. Phys.; (United States) Vol. 39:1; ISSN JLTPA
• Country of Publication: United States
• Language: English

Related Subjects

640450* -- Fluid Physics-- Superfluidity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANISOTROPY
CRITICAL CURRENT
CURRENTS
DENSITY
ELECTRIC CURRENTS
EVEN-ODD NUCLEI
HELIUM 3
HELIUM 3 B
HELIUM ISOTOPES
ISOTOPES
LIGHT NUCLEI
MATHEMATICAL MODELS
NUCLEAR MODELS
NUCLEI
ORDER PARAMETERS
PHYSICAL PROPERTIES
STABLE ISOTOPES
VELOCITY
WEAK-COUPLING MODEL